Student or educator? Sign up with your school email and get 6 months of Pro free.
CoChat
Sign Up
Cited by 11Astro and Planetary ScienceStellar, planetary, and galactic studiesHistory and Developments in Astronomy

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

The orbits of Triton and Nereid and the pole orientation of Neptune from Voyager,Hubble Space Telescope, and Earth-based astrometry in 1847–2020

Open access
Yuan, Ye, Li, Fan, Fu, Yanning, Chen, Jian·2021·Astronomy & Astrophysics
DOI 10.1051/0004-6361/202140739
Open this paper in CoChat — free accountOpen PDF

Abstract

Context.New observations and new planetary and satellite ephemerides provide opportunities to improve the ephemerides for Triton and Nereid as well as relevant parameters. In particular, the observations include a lot of new accurate Earth-based positions reduced with Gaia astrometic catalogs and accurate positions obtained from Hubble Space Telescope. Aims.We aim to reliably improve the ephemerides for Triton and Nereid along with some parameters by using all the available astrometric data from 1847 to 2020 and by updating the dynamical model. We also aim to improve the geometrical descriptions based on the improved orbits of the two satellites and the pole orientation of Neptune. Methods.The orbits of Triton and Nereid are determined by fitting dynamical and observational model parameters to observations in a weighted least-squares sense. The dynamical model makes use of the new ephemerides from Jet Propulsion Laboratory for planets, DE440, and those for the inner satellites of Neptune, NEP090. For completeness, in addition to the gravitational effects considered by NEP081, the model also includes perturbations from inner satellites and a revised model for the motion of the pole orientation of Neptune. Moreover, model simplifications are investigated to speed up the motion equation integration. Since the pole orientation angles of Neptune at epoch are possibly improvable according to the preliminary post-fit sensitivity analysis, these angles are adjusted together with the satellite state vectors at epoch. Linear mapping of the covariance matrix is a measure of formal uncertainties of our orbit and pole solutions. However, to obtain more reliable accuracy estimations, it is necessary to consider the uncertainties in the observations and the unadjusted model parameters. To accomplish this, a method (BR-RS) that performs bootstrap resampling of observations (BR) and random sampling of unadjusted model parameters (RS) is used. Analytical representations are fitted to the orbit and pole solutions to provide their geometric descriptions. Results.The model we use can be fitted to the observations with their estimated accuracies. The new ephemerides,FORCES-8-MAIN-2020, covering years 1600–2650 are available online in SPICE format. The orbits are well determined with the orbital uncertainties expected to be within 200 km (about 10 mas as seen from the Earth) for Triton and 1000 km (50 mas) for Nereid for the next 100 yr as estimated by the BR-RS method. In particular, the correction in the Nereid mean orbit motion from the NEP081 solution is +4.′′9 yr−1, and has a BR-RS uncertainty of 0.′′24 yr−1. In the fitting process, we also determine the pole orientation of Neptune. At the initial epoch 1989 September 1 TDB, the right ascension and declination of the new pole orientation referred to the International Celestial Reference System are αp= 299.°339 ± 0.°012 (formal)∕ ± 0.°014 (BR-RS) and δp= 42.°985 ± 0.°016 (formal)∕ ± 0.°045 (BR-RS), respectively. From 1800 to 2200, the motion of the pole orientation is well constrained with a BR-RS uncertainty of about 0.°01–0.°05. We also provide geometrical descriptions for the new orbits and pole orientation.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1051/0004-6361/202140739

Cites

1 of 1 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Research works printed but not linked: 162

  1. Agnor, 2006, Nature, 441, 192, 10.1038/nature04792 · DOI
  2. Aitken, 1899, Astron. Nachr., 149, 373, 10.1002/asna.18991492104 · DOI
  3. Aitken, 1904, Lick Observ. Bull., 51, 157, 10.5479/ADS/bib/1904LicOB.2.157A · DOI
  4. Albrecht, 1909, Lick Observ. Bull., 5, 109, 10.5479/ADS/bib/1909LicOB.5.109A · DOI
  5. Alden, 1940, AJ, 49, 70, 10.1086/105639 · DOI
  6. Alden, 1943, AJ, 50, 110, 10.1086/105738 · DOI
  7. Archinal, 2018, Celest. Mech. Dyn. Astron., 130, 22, 10.1007/s10569-017-9805-5 · DOI
  8. Balanovskiĭ, 1923, Mitteilungen der Nikolai-Hauptsternwarte zu Pulkowo, 9, 85
  9. Barnard, 1893, AJ, 13, 10, 10.1086/101863 · DOI
  10. Barnard, 1894, AJ, 14, 9, 10.1086/102019 · DOI
  11. Barnard, 1895, AJ, 15, 41, 10.1086/102219 · DOI
  12. Barnard, 1898, AJ, 19, 25, 10.1086/102923 · DOI
  13. Barnard, 1899, AJ, 20, 41, 10.1086/103102 · DOI
  14. Barnard, 1901, AJ, 22, 27, 10.1086/103325 · DOI
  15. Barnard, 1903, AJ, 23, 105, 10.1086/103469 · DOI
  16. Barnard, 1906, AJ, 25, 41, 10.1086/103672 · DOI
  17. Barnard, 1906, AJ, 25, 100, 10.1086/103714 · DOI
  18. Barnard, 1907, AJ, 25, 164, 10.1086/103760 · DOI
  19. Barnard, 1909, Astron. Nachr., 181, 321, 10.1002/asna.19091812003 · DOI
  20. Barnard, 1910, AJ, 26, 144, 10.1086/103887 · DOI
  21. Barnard, 1912, AJ, 27, 111, 10.1086/103970 · DOI
  22. Barnard, 1913, AJ, 28, 10, 10.1086/104001 · DOI
  23. Barnard, 1915, AJ, 29, 39, 10.1086/104116 · DOI
  24. Barnard, 1916, AJ, 30, 2, 10.1086/104162 · DOI
  25. Barnard, 1917, AJ, 30, 214, 10.1086/104228 · DOI
  26. Barnard, 1919, AJ, 32, 103, 10.1086/104344 · DOI
  27. Barnard, 1927, AJ, 37, 127, 10.1086/104768 · DOI
  28. Beauvalet, 2012, A&A, 540, A65, 10.1051/0004-6361/201116952 · DOI
  29. Boué, 2006, Icarus, 185, 312, 10.1016/j.icarus.2006.07.019 · DOI
  30. Bower, 1923, AJ, 35, 108, 10.1086/104597 · DOI
  31. Brozović, 2020, Icarus, 338, 113462, 10.1016/j.icarus.2019.113462 · DOI
  32. Burton, 1913, AJ, 28, 44, 10.1086/104014 · DOI
  33. Burton, 1919, AJ, 32, 113, 10.1086/104350 · DOI
  34. Christie, 1909, Greenwich Observations in Astronomy, Magnetism and Meteorology made at the Royal Observatory, Series 2, 69, G207
  35. Crawford, 1928, Lick Observ. Bull., 404, 8, 10.5479/ADS/bib/1928LicOB.14.8C · DOI
  36. Davis, 1874, MNRAS, 35, 49, 10.1093/mnras/35.1.49 · DOI
  37. Desmars, 2009, A&A, 499, 321, 10.1051/0004-6361/200811509 · DOI
  38. Desmars, 2013, A&A, 553, A36, 10.1051/0004-6361/201321114 · DOI
  39. Desmars, 2015, A&A, 584, A96, 10.1051/0004-6361/201526498 · DOI
  40. Dirkx, 2016, P&SS, 134, 82, 10.1016/j.pss.2016.10.011 · DOI
  41. Drew, 1897, AJ, 17, 131, 10.1086/102687 · DOI
  42. Drew, 1899, AJ, 20, 30, 10.1086/103092 · DOI
  43. Emelyanov, 2010, Planet. Space Sci., 58, 411, 10.1016/j.pss.2009.11.003 · DOI
  44. Emelyanov, 2008, A&A, 487, 759, 10.1051/0004-6361:200809790 · DOI
  45. Emelyanov, 2011, MNRAS, 417, 458, 10.1111/j.1365-2966.2011.19282.x · DOI
  46. Emelyanov, 2005, Sol. Syst. Res., 39, 112, 10.1007/s11208-005-0027-0 · DOI
  47. Emelyanov, 2015, MNRAS, 454, 2205, 10.1093/mnras/stv2116 · DOI
  48. Everhart E. 1985, in Dynamics of Comets: Their Origin and Evolution, Proceedings of IAU Colloq. 83, held in Rome, Italy, June 11–15, 1984, eds. Carusi A., & Valsecchi G. B.. (Dordrecht: Reidel, Astrophysics and Space Science Library), 115
  49. Fienga, 2008, A&A, 477, 315, 10.1051/0004-6361:20066607 · DOI
  50. Gomes-Júnior, 2015, A&A, 580, A76, 10.1051/0004-6361/201526273 · DOI
  51. Hall, 1876, Astron. Nachr., 88, 131, 10.1002/asna.18760880803 · DOI
  52. Hall, 1877, Astron. Nachr., 90, 161, 10.1002/asna.18770901102 · DOI
  53. Hall, 1900, AJ, 20, 191, 10.1086/103211 · DOI
  54. Hall, 1911, AJ, 26, 179, 10.1086/103908 · DOI
  55. Hall, 1920, AJ, 33, 62, 10.1086/104413 · DOI
  56. Hall, 1922, AJ, 34, 18, 10.1086/104486 · DOI
  57. Hall, 1913, AJ, 28, 42, 10.1086/104013 · DOI
  58. Hammond, 1906, AJ, 25, 93, 10.1086/103706 · DOI
  59. Hammond, 1905, AJ, 24, 188, 10.1086/103634 · DOI
  60. Harrington, 1984, AJ, 89, 889, 10.1086/113586 · DOI
  61. Harris, 1949, AJ, 54, 197, 10.1086/106264 · DOI
  62. Helled, 2010, Icarus, 210, 446, 10.1016/j.icarus.2010.06.037 · DOI
  63. Henry, 1884, Bull. Astron. Ser. I, 1, 89
  64. Henry, 1884, Bull. Astron. Ser. I, 1, 178
  65. Henry, 1886, Bull. Astron. Ser. I, 3, 488
  66. Hussey, 1899, AJ, 20, 71, 10.1086/103126 · DOI
  67. Hussey, 1902, Lick Observ. Bull., 17, 139, 10.5479/ADS/bib/1902LicOB.1.139H · DOI
  68. Jacobson, 1991, A&AS, 90, 541
  69. Jacobson R. A. 2008, in AIAA/AAS Astrodynamics Specialist Conference and Exhibit (Pasadena, CA: Jet Propulsion Laboratory, National Aeronauticsand Space Administration), AIAA 2008-7372
  70. Jacobson, 2009, AJ, 137, 4322, 10.1088/0004-6256/137/5/4322 · DOI
  71. Kiseleva, 2012, Sol. Syst. Res., 46, 436, 10.1134/S0038094612050048 · DOI
  72. Kiss, 2016, MNRAS, 457, 2908, 10.1093/mnras/stw081 · DOI
  73. Kostinsky, 1900, Astron. Nachr., 152, 277, 10.1002/asna.19001521802 · DOI
  74. Kostinsky, 1902, Astron. Nachr., 157, 287, 10.1002/asna.19011571707 · DOI
  75. Lainey, 2016, Celest. Mech. Dyn. Astron., 126, 145, 10.1007/s10569-016-9695-y · DOI
  76. Lainey, 2004, A&A, 420, 1171, 10.1051/0004-6361:20034565 · DOI
  77. Lainey, 2019, Icarus, 326, 48, 10.1016/j.icarus.2019.01.026 · DOI
  78. Landgraf, 1988, IAU Circ., 4542, 1
  79. Lassell, 1849, MNRAS, 9, 103, 10.1093/mnras/9.5.103 · DOI
  80. Lassell, 1849, MNRAS, 10, 8
  81. Lassell, 1850, MNRAS, 10, 132, 10.1093/mnras/10.6.132 · DOI
  82. Lassell, 1851, MNRAS, 11, 61, 10.1093/mnras/11.3.62 · DOI
  83. Lassell, 1852, MNRAS, 13, 37, 10.1093/mnras/13.2.43 · DOI
  84. Lassell, 1852, MNRAS, 12, 155, 10.1093/mnras/12.5.155 · DOI
  85. Lassell, 1857, MNRAS, 17, 70
  86. Lassell, 1864, MNRAS, 24, 209
  87. Li, 2020, AJ, 159, 184, 10.3847/1538-3881/ab7cd5 · DOI
  88. Li, 2020, A&A, 638, A139, 10.1051/0004-6361/201936672 · DOI
  89. Lindegren, 2016, A&A, 595, A4, 10.1051/0004-6361/201628714 · DOI
  90. Lindegren, 2018, A&A, 616, A2, 10.1051/0004-6361/201832727 · DOI · Paper page
  91. Lohse, 1887, MNRAS, 47, 497, 10.1093/mnras/47.8.494 · DOI
  92. Milani A., & Gronchi G. F. 2010, Theory of Orbital Determination (Cambridge: Cambridge University Press) · DOI
  93. Mitchell K. L., Prockter L. M., Frazier W. E., et al. 2019, Lunar Planet. Sci. Conf. Lunar Planet. Sci. Conf., 3200
  94. MPC 1990, Minor Planet Center, Circular No. 40913 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  95. MPC 1999, Minor Planet Center, Circular No. 38967, 49878 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  96. MPC 2001, Minor Planet Center, Circular No. 43261, 44182, 47500, 47501, 49423 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  97. MPC 2002, Minor Planet Center, Circular No. 46216, 46508, 47500, 47501, 49423, 49767, 59029 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  98. MPC 2003, Minor Planet Center, Circular No. 49423, 49424, 49767 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  99. MPC 2004, Minor Planet Center, Circular No. 52312, 52313, 52492, 52493, 52887, 53171, 53948, 54697, 54698 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  100. MPC 2005, Minor Planet Center, Circular No. 54343, 54557, 54698, 54823, 54965, 55508 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  101. MPC 2006, Minor Planet Center, Circular No. 56794, 57110, 57416, 57417, 57573, 57574, 57792, 57793, 57947, 58097 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  102. MPC 2007, Minor Planet Center, Circular No. 59581, 59860, 60086, 60268, 60451, 60647, 60906, 61163 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  103. MPC 2008, Minor Planet Center, Circular No. 62864, 63123, 63363, 63584, 63806, 64093, (Cambridge, MA: Smithsonian Astrophysical Observatory)
  104. MPC 2009, Minor Planet Center, Circular No. 65920, 66450, 66686, 66905, 67130, 67668, 78327 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  105. MPC 2010, Minor Planet Center, Circular No. 70193, 71528, 72437, 80452 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  106. MPC 2011, Minor Planet Center, Circular No. 75593, 75849, 76329, 76732, 77162, 79140 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  107. MPC 2012, Minor Planet Center, Circular No. 79746, 79971, 80114, 80452 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  108. MPC 2013, Minor Planet Center, Circular No. 83713, 84214, 84512, 84739, 85079, 85502, 100688 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  109. MPC 2014, Minor Planet Center, Circular No. 89137, 89456, 90446, 90966, 100688, 100689 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  110. MPC 2015, Minor Planet Center, Circular No. 94830, 95374, 97001, 99414, 100689 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  111. MPC 2016, Minor Planet Center, Circular No. 101342 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  112. MPC 2017, Minor Planet Center, Circular No. 107170 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  113. MPC 2018, Minor Planet Center, Circular No. 110808, 115066, 115989 (Cambridge, MA: Smithsonian Astrophysical Observatory)
  114. Neuĭmin, 1926, Mitteilungen der Nikolai-Hauptsternwarte zu Pulkowo, 10, 418
  115. Parrish, 1892, AJ, 12, 90, 10.1086/101723 · DOI
  116. Perrine, 1903, Lick Observ. Bull., 39, 70, 10.5479/ADS/bib/1903LicOB.2.70P · DOI
  117. Perrotin, 1887, Bull. Astron. Ser. I, 4, 339
  118. Podolak, 2012, ApJ, 759, L32, 10.1088/2041-8205/759/2/L32 · DOI
  119. Prockter L. M., Mitchell K. L., Howett C. J. A., et al. 2019, Lunar Planet. Sci. Conf., 3188
  120. Qiao, 2007, MNRAS, 376, 1707, 10.1111/j.1365-2966.2007.11526.x · DOI
  121. Qiao, 2014, MNRAS, 440, 3749, 10.1093/mnras/stu566 · DOI
  122. Rein, 2015, MNRAS, 446, 1424, 10.1093/mnras/stu2164 · DOI · Paper page
  123. ROG, 1899, MNRAS, 59, 501, 10.1093/mnras/59.8.501 · DOI
  124. ROG, 1900, MNRAS, 61, 9, 10.1093/mnras/61.1.9 · DOI
  125. ROG, 1903, MNRAS, 63, 503, 10.1093/mnras/63.8.503 · DOI
  126. ROG, 1904, MNRAS, 64, 835, 10.1093/mnras/64.9.835 · DOI
  127. ROG, 1905, MNRAS, 66, 10, 10.1093/mnras/66.1.10 · DOI
  128. ROG, 1906, MNRAS, 67, 91, 10.1093/mnras/67.1.91 · DOI
  129. ROG, 1907, MNRAS, 68, 33, 10.1093/mnras/68.1.33 · DOI
  130. ROG, 1908, MNRAS, 68, 586, 10.1093/mnras/68.8.586 · DOI
  131. ROG, 1913, MNRAS, 73, 155, 10.1093/mnras/73.3.155 · DOI
  132. Rose, 1974, AJ, 79, 489, 10.1086/111570 · DOI
  133. Rufu, 2017, AJ, 154, 208, 10.3847/1538-3881/aa9184 · DOI
  134. Rümker, 1849, MNRAS, 9, 221
  135. Schaeberle, 1895, AJ, 15, 25, 10.1086/102200 · DOI
  136. Schaeberle, 1897, AJ, 17, 62, 10.1086/102616 · DOI
  137. Schaeberle, 1898, AJ, 18, 168, 10.1086/102871 · DOI
  138. Schaefer, 1988, Nature, 333, 436, 10.1038/333436a0 · DOI
  139. Showalter, 2019, Nature, 566, 350, 10.1038/s41586-019-0909-9 · DOI
  140. Soulié, 1975, A&AS, 22, 49
  141. Tang, 2020, A&A, 641, A108, 10.1051/0004-6361/202038556 · DOI
  142. USNO, 1881, Astronomical and Meteorological Observations made at the U.S. Naval Observatory, 17, 1
  143. USNO, 1911, Publications of the U.S. Naval Observatory Second Series, 6, A1
  144. van Biesbroeck, 1976, AJ, 81, 122, 10.1086/111863 · DOI
  145. Veiga, 1998, A&AS, 131, 291, 10.1051/aas:1998268 · DOI
  146. Veiga, 1996, A&AS, 120, 107, 10.1051/aas:1996270 · DOI
  147. Veiga, 1996, A&AS, 115, 319
  148. Veiga, 1999, A&AS, 136, 445, 10.1051/aas:1999226 · DOI
  149. Veillet, 1982, A&A, 112, 277
  150. Veillet, 1988, A&A, 189, 303
  151. Vieira Martins, 2004, A&A, 425, 1107, 10.1051/0004-6361:200400024 · DOI
  152. Walker, 1988, AJ, 95, 1562, 10.1086/114753 · DOI
  153. Walker, 1978, AJ, 83, 838, 10.1086/112267 · DOI
  154. Wang, 2017, MNRAS, 468, 1415, 10.1093/mnras/stx550 · DOI
  155. Winlock, 1888, Annals of Harvard College Observatory, 13, 86
  156. Wirtz, 1905, Astron. Nachr., 169, 33, 10.1002/asna.19051690302 · DOI
  157. Yizhakevych, 2016, Odessa Astron. Pub., 29, 155
  158. Young, 1888, AJ, 8, 14, 10.1086/101009 · DOI
  159. Yu, 2018, Planet. Space Sci., 152, 82, 10.1016/j.pss.2018.01.001 · DOI
  160. Yu, 2019, Planet. Space Sci., 165, 205, 10.1016/j.pss.2018.10.007 · DOI
  161. Yuan, 2021, A&A, 645, A48, 10.1051/0004-6361/202038776 · DOI
  162. Zacharias, 2004, AJ, 127, 3043, 10.1086/386353 · DOI

Cited by

Still being checked.

Metadata

Authors
Yuan, Y., Li, F., Fu, Y., & Chen, J.
Affiliations
  • University of Science and Technology of China (CN)
  • Chinese Academy of Sciences (CN)
ORCID
Venue
Astronomy & Astrophysics
Publisher
EDP Sciences
Published
2021-10
Volume
654
Pages
A66
ISSN
  • 0004-6361 (ISSN-L)
  • 1432-0746
DOI
10.1051/0004-6361/202140739
OpenAlex
W3207044208
Cited by
11
References
1
Citations by year
2026: 2 · 2025: 5 · 2023: 3 · 2021: 1
FWCI
0.54
Type
journal article
Language
en
Open access
Licence
www.edpsciences.org/en/authors/copyright-and-licensing (vor, 11 d)
Locations
Astronomy and Astrophysics (publishedVersion)
Funders
  • National Aeronautics and Space Administration
  • European Space Agency
  • National Natural Science Foundation of China (XDB 41000000, CMS-CSST-2021-B10, 11273066, 11178006, CMS-CSST-2021-A12, 11673071, 11533004)
  • Chinese Academy of Sciences (XDB 41000000, CMS-CSST-2021-A12, No. XDB41000000)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Space and Planetary Science › Astro and Planetary Science
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › History and Developments in Astronomy
Keywords
Triton, Nereids, Neptune, pole orientation, satellite ephemeris, orbital elements, dynamic modeling, Gaia astrometry, bootstrapping, covariance matrix

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.