MPEC 2023-X131 : 2020 XN2
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M.P.E.C. 2023-X131 Issued 2023 December 7, 11:56 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
2020 XN2
Revision to MPEC 2020-X87
Additional Observations:
K20X02N C2023 12 06.46764408 33 39.798+34 13 04.18 18.9 GVEX131U68
K20X02N C2023 12 06.47098608 33 35.061+34 12 47.31 18.9 GVEX131U68
K20X02N C2023 12 06.48882408 33 10.003+34 11 18.28 19.0 GVEX131U68
K20X02N C2023 12 06.49216508 33 05.315+34 11 01.11 19.0 GVEX131U68
K20X02N C2023 12 06.50370908 32 49.113+34 10 02.80 18.8 GVEX131U74
K20X02N C2023 12 06.50762908 32 43.673+34 09 42.63 18.8 GVEX131U74
K20X02N C2023 12 06.53552408 32 04.866+34 07 19.88 18.7 GVEX131U74
K20X02N C2023 12 06.53581408 32 10.502+34 08 01.43 18.76oVEX131T08
K20X02N C2023 12 06.53876908 32 06.432+34 07 47.82 17.94oVEX131T08
K20X02N C2023 12 06.53944408 31 59.431+34 06 59.45 18.7 GVEX131U74
K20X02N C2023 12 06.55502108 31 37.938+34 05 38.94 18.8 GVEX131U74
K20X02N C2023 12 06.55608508 31 42.283+34 06 22.54 18.77oVEX131T08
K20X02N C2023 12 06.55899508 31 32.466+34 05 18.30 18.8 GVEX131U74
K20X02N C2023 12 06.56410608 31 31.152+34 05 42.58 18.69oVEX131T08
K20X02N KC2023 12 06.87454008 25 01.15 +33 38 03.7 19.8 GVEX131M60
K20X02N KC2023 12 06.87863008 24 56.11 +33 37 44.8 19.0 GVEX131M60
K20X02N KC2023 12 06.88124608 24 52.90 +33 37 32.6 19.1 GVEX131M60
K20X02N KC2023 12 06.88831108 24 44.14 +33 37 00.0 18.7 GVEX131104
K20X02N KC2023 12 06.89121108 24 40.54 +33 36 46.3 18.8 GVEX131104
K20X02N KC2023 12 06.89701308 24 33.33 +33 36 19.9 18.8 GVEX131104
K20X02N KC2023 12 06.92861408 23 54.73 +33 33 45.0 18.3 GXEX131958
K20X02N KC2023 12 06.93368508 23 48.35 +33 33 20.9 17.7 GXEX131958
K20X02N KC2023 12 06.93870008 23 42.27 +33 32 58.6 17.4 GXEX131958
K20X02N KC2023 12 06.96670908 23 06.81 +33 30 52.4 18.7 GVEX131203
K20X02N KC2023 12 06.97539108 22 56.03 +33 30 11.3 18.8 GVEX131203
K20X02N KC2023 12 06.98556208 22 43.43 +33 29 23.8 19.0 GVEX131203
K20X02N 1C2023 12 07.01382 08 22 04.77 +33 27 21.4 19.3 GVEX131C40
K20X02N 1C2023 12 07.01759 08 22 00.04 +33 27 03.5 19.1 GVEX131C40
K20X02N 1C2023 12 07.02138 08 21 55.30 +33 26 45.1 18.5 GVEX131C40
K20X02N 1C2023 12 07.03634 08 21 36.76 +33 25 30.8 18.8 GVEX131C40
K20X02N 1C2023 12 07.04012 08 21 32.11 +33 25 12.3 18.8 GVEX131C40
K20X02N KC2023 12 07.13737 08 19 36.85 +33 17 11.5 19.0 GVEX131204
K20X02N KC2023 12 07.14203 08 19 31.19 +33 16 48.4 VEX131204
K20X02N KC2023 12 07.14667 08 19 25.58 +33 16 25.4 VEX131204
K20X02N KC2023 12 07.37086308 15 12.85 +32 58 28.6 19.3 GVEX131H21
K20X02N KC2023 12 07.37254208 15 10.92 +32 58 20.7 19.3 GVEX131H21
K20X02N KC2023 12 07.37459108 15 08.54 +32 58 10.8 19.2 GVEX131H21
K20X02N KC2023 12 07.37636408 15 06.50 +32 58 02.3 19.3 GVEX131H21
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m F4 Reflector + CCD.
203 GiaGa Observatory. Observers S. Foglia, G. Galli. Measurer G. Galli.
0.36-m f/5.76 Schmidt-Cassegrain + CCD.
204 Schiaparelli Observatory. Observers L. Buzzi, G. Galli. 0.84-m f/3.5
reflector + CCD.
958 Observatoire de Dax. Observers P. Dupouy, J. B. de Vanssay. Measurer P.
Dupouy. 0.43-m f/2.7 Reflector + CCD.
C40 Kuban State University Astrophysical Observatory. Observers A. Ivanov, A.
Barcov, V. Ivanov, V. Lysenko, N. Yakovenko, N. Ivanova, N. Gorbunov, G.
Kurbatov, P. Shchukin, V. Roshchupko. Measurer A. Ivanov. 0.51-m f/8
reflector + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 0.76-m f/3.0 astrograph + CCD.
M60 Virgil Observatory, Loiano. Observer A. Carbognani. 0.30-m f/4.0
Reflector + CCD.
T08 ATLAS-MLO, Mauna Loa. Observers L. Denneau, R. Siverd, J. Tonry, H.
Weiland. Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
J. Robinson, R. Siverd, J. Tonry, H. Weiland. 0.5-m Reflector + CCD.
U68 JPL SynTrack Robotic Telescope, Auberry. Observers N. Saini, C. Zhai, R.
Trahan, M. Zhan, M. Shao. 0.28-m Reflector + CCD.
U74 JPL SynTrack Robotic Telescope 2, Auberry. Observers N. Saini, C. Zhai,
R. Trahan, M. Zhan, M. Shao. 0.36-m Reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
231206 U68 5.49- 8.42- 231207 H21 6.93- 7.41- MPO600179 -1.78 days
Orbital elements:
2020 XN2 Earth MOID = 0.0209 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 346.71839 (2000.0) P Q
n 0.32979265 Peri. 101.62804 +0.97753726 -0.20043645
a 2.0747960 Node 269.95950 +0.15890309 +0.90400694
e 0.6128050 Incl. 3.73618 +0.13845834 +0.37761976
P 2.99 H 23.41 G 0.15 U 0
Residuals in seconds of arc
201208 703 (1.9+ 1.2-) 201209 900 1.1- 0.4+ 201218 I52 0.1+ 0.0
201208 703 0.3- 0.2- 201209 900 1.2- 0.6+ 201218 I52 0.2- 0.3+
201208 703 1.5+ 0.1- 201209 900 1.2- 0.7+ 201218 I52 0.1- 0.4+
201208 I52 1.3- 0.1+ 201209 900 0.5- 0.6+ 201220 I52 0.1+ 0.3+
201208 I52 1.3+ 2.2- 201209 595 0.1- 0.0 201220 I52 0.0 0.0
201208 I52 0.4- 1.9- 201209 595 0.1+ 0.3- 201220 I52 0.4- 0.5-
201208 I52 0.2- 0.1- 201209 595 0.1+ 0.1+ 201220 I52 0.3+ 0.0
201208 I52 0.4- 0.1- 201210 T08 0.3- 0.6+ 201222 I52 0.5- 0.1-
201208 I52 0.2- 0.0 201210 T08 0.0 0.0 201222 I52 0.2- 0.0
201208 I52 0.1+ 0.1- 201210 T08 0.2+ 0.1+ 201222 I52 0.5+ 0.6-
201208 V00 0.2- 0.0 201210 T08 0.2+ 0.1+ 201222 I52 0.2+ 0.2+
201208 V00 0.1+ 0.0 201211 K88 0.2+ 0.3+ 231206 U68 0.1+ 0.1-
201208 V00 0.1+ 0.1- 201211 K88 0.1- 0.3- 231206 U68 0.2- 0.3-
201208 V00 0.3- 0.0 201211 K88 0.1- 0.1+ 231206 U68 0.1+ 0.2+
201208 033 0.2- 0.3- 201212 T05 0.6- 0.2+ 231206 U68 0.1+ 0.1-
201208 033 0.1- 0.3- 201212 T05 0.1+ 0.0 231206 U74 0.4- 0.1+
201208 033 0.2- 0.2- 201212 T05 0.4+ 0.1+ 231206 U74 0.1+ 0.1-
201208 N88 0.6+ 0.2- 201212 T05 0.3- 0.8- 231206 U74 0.0 0.0
201208 N88 0.6+ 0.2- 201212 B49 0.5+ 0.1+ 231206 T08 0.7- 0.8-
201208 N88 0.2+ 0.0 201212 B49 0.3+ 0.6+ 231206 T08 0.0 0.0
201208 N88 0.4+ 0.2+ 201212 B49 0.1- 0.4- 231206 U74 0.1- 0.2-
201208 N88 0.4+ 0.0 201212 J69 0.0 0.4+ 231206 U74 0.0 0.1+
201208 J69 (2.8+ 0.4-) 201212 J69 0.1+ 0.2+ 231206 T08 0.1+ 0.0
201208 J69 (3.0+ 0.7-) 201212 J69 0.2- 0.2+ 231206 U74 0.1- 0.1+
201208 J69 (3.2+ 1.0-) 201212 130 0.0 0.1- 231206 T08 0.5+ 0.2-
201208 J69 0.4+ 0.4- 201212 130 0.4+ 0.0 231206 M60 0.4- 0.1-
201208 J69 0.2- 0.9+ 201212 130 0.2- 0.0 231206 M60 0.0 0.1-
201208 L04 0.3+ 0.3+ 201214 I52 0.3- 0.2+ 231206 M60 0.5+ 0.3-
201208 L04 0.4+ 0.3- 201214 I52 0.1- 0.2+ 231206 104 0.1+ 0.1-
201208 L04 0.2+ 0.0 201214 I52 0.1+ 0.3+ 231206 104 0.0 0.4-
201208 W34 0.4+ 0.4- 201214 I52 0.1+ 0.2+ 231206 104 0.1- 0.0
201209 W34 0.2+ 0.1- 201214 703 0.6+ 0.2+ 231206 958 0.7+ 1.2+
201209 W34 0.0 0.2+ 201214 703 1.7+ 0.5- 231206 958 1.0- 0.5+
201209 I52 (1.0+ 0.3+) 201214 703 0.9+ 0.9- 231206 958 0.2+ 1.3+
201209 I52 0.2+ 0.0 201214 T08 0.1- 0.1- 231206 203 0.0 0.2+
201209 I52 0.0 0.0 201214 T08 0.5+ 0.3- 231206 203 0.2- 0.3-
201209 I52 0.0 0.0 201214 T08 0.7+ 0.1+ 231206 203 0.2- 0.1-
201209 858 0.3+ 0.0 201214 T08 0.3- 0.1- 231207 C40 0.4- 0.2-
201209 858 0.0 0.2+ 201216 I52 0.0 0.2+ 231207 C40 0.8- 0.4+
201209 858 0.1+ 0.1+ 201216 I52 (0.5- 1.9-) 231207 C40 1.1- 0.6+
201209 858 0.1+ 0.1+ 201216 I52 0.4- 0.7- 231207 C40 0.5- 0.0
201209 H21 0.1+ 0.0 201216 G96 0.0 0.1+ 231207 C40 0.1- 0.2+
201209 H21 0.0 0.1+ 201216 G96 0.0 0.1- 231207 204 0.0 0.1+
201209 H21 0.1+ 0.1- 201216 G96 0.1- 0.1+ 231207 204 0.1- 0.0
201209 718 0.4- 0.1- 201216 G96 0.1+ 0.0 231207 204 0.1- 0.1+
201209 718 0.8- 0.6+ 201217 I52 0.1- 0.0 231207 H21 0.1- 0.2-
201209 718 0.2+ 0.2- 201217 I52 0.2- 0.2+ 231207 H21 0.1+ 0.0
201209 718 0.2+ 0.0 201217 I52 0.0 0.2+ 231207 H21 0.1+ 0.0
201209 718 1.6- 0.0 201217 I52 0.4+ 0.0 231207 H21 0.3+ 0.1+
201209 718 1.6- 0.1- 201218 I52 0.1- 0.1+
Ephemeris:
2020 XN2 a,e,i = 2.07, 0.61, 4 q = 0.8034
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 11 07 17 06 50.1 -10 21 48 0.2021 0.8330 34.7 137.4 26.1
...
2023 11 22 16 15 28.6 +01 55 12 0.07962 0.9150 22.9 155.1 27.3
...
2023 11 30 13 04 09.8 +30 53 01 0.04037 0.9737 70.6 107.2 20.4
...
2023 12 06 08 44 46.5 +34 52 22 0.05895 1.0222 127.2 50.2 19.2
2023 12 07 08 22 21.5 +33 29 01 0.06500 1.0305 132.7 44.6 19.2
2023 12 08 08 04 20.1 +32 09 11 0.07145 1.0390 137.5 39.9 19.3
...
2023 12 14 07 05 07.2 +26 27 30 0.1150 1.0909 156.5 21.1 19.9
...
2023 12 22 06 34 13.1 +22 50 15 0.1806 1.1627 171.6 7.1 20.5
...
2024 01 06 06 13 11.6 +20 15 55 0.3229 1.3008 167.9 9.1 22.1
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-X131
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