MPEC 2023-R15 : 2021 RN1
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M.P.E.C. 2023-R15 Issued 2023 September 5, 14:05 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2021 RN1
Revision to MPEC 2021-R108
Additional Observations:
K21R01N KC2023 09 02.88091722 17 35.071-09 13 08.33 18.7 GVER015J95
K21R01N KC2023 09 02.88790222 17 29.369-09 11 04.70 18.6 GVER015J95
K21R01N KC2023 09 02.89190022 17 26.078-09 09 53.60 18.3 GVER015J95
K21R01N KC2023 09 02.89586022 17 22.822-09 08 43.66 18.6 GVER015J95
K21R01N KC2023 09 03.21578422 13 09.99 -07 34 23.2 18.7 GXER015858
K21R01N KC2023 09 03.22755122 13 00.54 -07 30 57.0 19.0 GXER015858
K21R01N KC2023 09 03.24015522 12 50.46 -07 27 17.7 19.6 GXER015858
K21R01N hC2023 09 03.86135922 05 03.475-04 30 42.48 18.2 GVER015J95
K21R01N hC2023 09 03.87137622 04 55.982-04 27 55.30 18.9 GVER015J95
K21R01N hC2023 09 03.88022722 04 49.421-04 25 28.42 18.4 GVER015J95
K21R01N hC2023 09 03.89274022 04 40.054-04 22 00.19 18.0 GVER015J95
K21R01N KC2023 09 04.17685622 01 16.12 -03 03 49.8 18.4 GXER015858
K21R01N KC2023 09 04.18351722 01 11.25 -03 02 01.6 18.3 GXER015858
K21R01N KC2023 09 04.19011322 01 06.41 -03 00 14.4 18.3 GXER015858
Observer details:
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.16-m f/7
Refractor + CCD, 0.51-m f/8.1 Schmidt-Cassegrain + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
230902 J95 1.06- 1.84- 230904 858 1.03- 1.73- MPO660777 -0.24 days
Orbital elements:
2021 RN1 Earth MOID = 0.1092 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 21.98419 (2000.0) P Q
n 0.49432237 Peri. 326.31709 +0.62292466 +0.74822586
a 1.5841484 Node 338.95697 -0.50040971 +0.15680133
e 0.3208922 Incl. 39.48109 -0.60129444 +0.64464829
P 1.99 H 22.32 G 0.15 U 1
Residuals in seconds of arc
210905 T05 0.8+ 0.1- 210905 J95 0.2+ 0.1- 210906 033 0.1+ 0.0
210905 T05 0.5+ 0.9+ 210905 246 0.2+ 0.2+ 210906 033 0.0 0.3-
210905 T05 0.4+ 0.0 210905 203 0.2- 0.1- 210906 807 0.1+ 0.1+
210905 T05 0.2- 0.2+ 210905 246 0.9- 0.2- 210907 807 0.2- 0.0
210905 T05 0.7+ 0.0 210905 246 0.1- 0.2+ 210907 807 0.3+ 0.1-
210905 K88 0.2+ 0.5- 210905 J95 0.1+ 0.1- 210908 033 0.1+ 0.0
210905 K88 0.2- 0.6- 210905 J95 0.3+ 0.6+ 210908 033 0.0 0.2+
210905 K88 (0.8- 1.2-) 210905 203 0.1+ 0.1+ 210908 033 0.0 0.1+
210905 104 0.3- 0.8+ 210905 J95 0.3- 0.0 210908 033 0.1- 0.1+
210905 246 0.3- 0.5- 210905 203 0.0 0.0 210908 033 0.0 0.0
210905 104 0.5- 0.3+ 210906 W34 0.4+ 0.3+ 210908 033 0.1+ 0.0
210905 595 0.3+ 0.6- 210906 W34 0.1+ 0.2+ 210911 691 0.6+ 0.0
210905 246 0.8- 0.4- 210906 W34 0.6+ 0.0 210911 691 0.3+ 0.1-
210905 A17 0.4- 0.2- 210906 H21 0.2- 0.1- 210914 691 0.2- 0.5+
210905 595 0.2+ 0.1- 210906 H21 0.3- 0.1- 210914 691 0.2- 0.0
210905 A17 0.0 1.0- 210906 H21 0.1- 0.0 210917 291 (0.8- 1.0+)
210905 595 0.4+ 0.1+ 210906 858 0.1- 0.0 210917 291 0.4- 0.1-
210905 104 0.7- 0.5+ 210906 Y00 0.6- 0.4- 211017 695 0.2+ 0.2-
210905 G15 0.0 0.5- 210906 Y00 0.1- 0.1- 211017 695 0.1+ 0.6-
210905 A17 0.0 0.4+ 210906 858 0.1- 0.0 211017 695 0.0 0.2-
210905 G15 0.3- 0.1+ 210906 Y00 0.9- 0.1- 230902 J95 0.1+ 0.8+
210905 958 0.5+ 0.1+ 210906 858 0.0 0.0 230902 J95 0.4+ 0.1+
210905 L01 0.1- 0.3+ 210906 654 0.2+ 0.4- 230902 J95 0.1+ 0.1+
210905 L01 0.2- 0.1+ 210906 734 0.1- 0.5+ 230902 J95 0.1- 0.5-
210905 L01 0.1- 0.0 210906 734 0.3- 0.6+ 230903 858 0.6- 0.0
210905 958 0.7- 0.9+ 210906 734 0.3- 0.5+ 230903 858 0.6- 0.8+
210905 L01 0.4- 0.1+ 210906 734 0.5- 0.3+ 230903 858 0.1- 0.2+
210905 K63 (0.0 1.4+) 210906 734 0.4- 0.4+ 230903 J95 0.3- 0.1-
210905 L01 0.2- 0.2+ 210906 734 0.2- 0.2+ 230903 J95 0.5- 0.2+
210905 K63 0.1+ 0.8+ 210906 654 0.3+ 0.4- 230903 J95 0.3+ 0.3-
210905 K63 0.7+ 0.7+ 210906 654 0.2+ 0.5- 230903 J95 0.1- 0.4-
210905 958 0.3+ 0.6+ 210906 E23 0.6- 0.3+ 230904 858 0.3- 0.1+
210905 033 0.2+ 0.0 210906 E23 (2.7+ 1.3+) 230904 858 0.2- 0.0
210905 033 0.0 0.1+ 210906 E23 0.1+ 0.4+ 230904 858 0.3- 0.1+
210905 033 0.0 0.1+ 210906 033 0.1+ 0.3+
210905 033 0.1+ 0.1+ 210906 033 0.1- 0.2+
Ephemeris:
2021 RN1 a,e,i = 1.58, 0.32, 39 q = 1.0758
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 08 06 04 31 00.4 -56 33 34 0.3225 1.0775 92.4 70.2 22.5
...
2023 08 21 02 12 50.6 -54 03 39 0.1680 1.0944 115.4 56.7 20.7
...
2023 08 29 23 37 29.1 -33 50 33 0.1130 1.1103 151.0 26.2 19.0
...
2023 09 04 22 03 21.3 -03 51 35 0.1187 1.1251 168.0 10.8 18.6
2023 09 05 21 51 53.2 +00 31 45 0.1242 1.1277 162.9 15.2 18.9
2023 09 06 21 41 29.6 +04 30 36 0.1306 1.1305 158.1 19.4 19.1
...
2023 09 12 20 57 00.8 +20 38 38 0.1836 1.1482 137.2 36.6 20.4
...
2023 09 20 20 27 22.4 +30 05 49 0.2715 1.1747 123.0 45.8 21.6
...
2023 10 05 20 10 59.2 +36 18 44 0.4478 1.2317 110.7 49.5 22.9
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-R15
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