MPEC 2021-A177 : 2021 AX5
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M.P.E.C. 2021-A177 Issued 2021 January 13, 21:38 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. 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 AX5
Observations:
K21A05X* C2021 01 12.29213507 57 18.44 +01 34 13.3 19.53GVEA177G96
K21A05X C2021 01 12.30248807 57 10.32 +01 36 24.9 19.63GVEA177G96
K21A05X C2021 01 12.30764907 57 06.29 +01 37 30.7 19.48GVEA177G96
K21A05X KC2021 01 12.37592607 56 13.30 +01 51 50.0 18.94GVEA177I52
K21A05X KC2021 01 12.37649207 56 12.96 +01 51 55.0 VEA177I52
K21A05X KC2021 01 12.37705907 56 12.49 +01 52 04.3 19.83GVEA177I52
K21A05X KC2021 01 12.89360707 50 22.84 +03 31 30.3 19.7 GVEA177598
K21A05X KC2021 01 12.89615607 50 21.14 +03 31 57.7 20.2 GVEA177598
K21A05X KC2021 01 12.90397807 50 15.99 +03 33 21.7 19.4 GVEA177598
K21A05X KC2021 01 12.91229 07 50 10.32 +03 34 49.2 19.5 GVEA177595
K21A05X KC2021 01 12.91961 07 50 05.57 +03 36 08.0 19.5 GVEA177595
K21A05X KC2021 01 12.92561 07 50 01.55 +03 37 11.5 18.8 GVEA177595
K21A05X IC2021 01 12.95576407 49 41.94 +03 42 32.3 20.0 GVEA177L01
K21A05X IC2021 01 12.95838707 49 40.23 +03 43 00.4 19.7 GVEA177L01
K21A05X KC2021 01 12.96166907 49 38.06 +03 43 34.4 19.5 GVEA177L01
K21A05X 1C2021 01 12.98840 07 49 20.87 +03 48 11.0 20.5 VVEA177033
K21A05X 1C2021 01 12.98926 07 49 20.32 +03 48 20.3 20.6 VVEA177033
K21A05X 1C2021 01 12.99013 07 49 19.77 +03 48 28.0 20.5 VVEA177033
K21A05X HC2021 01 13.01473 07 49 04.15 +03 52 51.0 VEA177204
K21A05X KC2021 01 13.02908 07 48 54.95 +03 55 20.3 20 GVEA177204
K21A05X KC2021 01 13.13633 07 47 53.76 +04 13 47.4 19.6 GVEA177W34
K21A05X KC2021 01 13.14156 07 47 50.55 +04 14 40.6 19.8 GVEA177W34
K21A05X KC2021 01 13.14810 07 47 46.48 +04 15 46.9 19.6 GVEA177W34
K21A05X KC2021 01 13.19352407 47 18.83 +04 23 14.6 20.2 VuEA177H21
K21A05X KC2021 01 13.19601207 47 17.31 +04 23 39.5 20.0 VuEA177H21
K21A05X KC2021 01 13.19912207 47 15.38 +04 24 10.4 20.1 VuEA177H21
K21A05X KC2021 01 13.33332207 45 56.08 +04 46 04.5 19.80GVEA177I52
K21A05X KC2021 01 13.34508107 45 49.05 +04 47 56.5 19.74GVEA177I52
K21A05X KC2021 01 13.34599607 45 48.54 +04 48 05.3 19.91GVEA177I52
K21A05X KC2021 01 13.85472 07 41 22.11 +06 03 29.8 20.0 GVEA177104
K21A05X KC2021 01 13.87061 07 41 13.88 +06 05 43.2 VEA177104
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, F.
Ludwig, B. Stecklum. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector +
CCD.
595 Farra d'Isonzo. Observers S. Aschi, E. Pettarin. Measurer E. Pettarin.
0.40-m f/5.15 reflector + CCD.
598 Loiano. Observer A. Carbognani.
G96 Mt. Lemmon Survey. Observer H. Groeller. Measurers E. J. Christensen, G.
A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.81-m f/4.0
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers T. A. Pruyne, E. J.
Christensen. Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A.
R. Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J.
Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W.
Wierzchos. 1.0-m reflector + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
W34 Squirrel Valley Observatory, Columbus. Observer R. L. Flynn. 0.36-m
Schmidt-Cassegrain + CCD.
Orbital elements:
2021 AX5 Earth MOID = 0.0299 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 5.67004 (2000.0) P Q
n 0.26760980 Peri. 200.21866 +0.99953150 +0.02681512
a 2.3848883 Node 158.22897 -0.01961923 +0.93136193
e 0.8400917 Incl. 2.27998 -0.02349163 +0.36310591
P 3.68 H 23.9 G 0.15 U 8
Residuals in seconds of arc
210112 G96 0.3- 0.0 210112 595 1.1- 0.2- 210113 W34 0.6- 0.7+
210112 G96 0.2- 0.3- 210112 L01 0.3+ 0.5- 210113 H21 0.2+ 0.2-
210112 G96 0.0 0.2- 210112 L01 0.2+ 0.2- 210113 H21 0.3+ 0.0
210112 I52 0.8- 0.3+ 210112 L01 0.3- 0.8- 210113 H21 0.1- 0.1+
210112 I52 (0.6+ 1.8-) 210112 033 0.7- 0.4+ 210113 I52 0.2+ 0.1-
210112 I52 0.0 0.5+ 210112 033 0.7- 0.7+ 210113 I52 0.4- 0.2-
210112 598 0.0 0.1+ 210112 033 0.5- 0.7- 210113 I52 0.1+ 0.1-
210112 598 0.3- 0.0 210113 204 0.3- 0.0 210113 104 0.1+ 0.2-
210112 598 0.3- 0.1- 210113 204 0.7- 0.3+ 210113 104 0.8- 0.3+
210112 595 0.6- 0.0 210113 W34 0.8- 0.2-
210112 595 0.2+ 0.4+ 210113 W34 0.3- 0.2+
Ephemeris:
2021 AX5 a,e,i = 2.38, 0.84, 2 q = 0.3814
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 12 14 18 14 21.2 -26 33 41 0.4166 0.5821 11.5 160.3 31.9
...
2020 12 29 17 35 03.1 -34 06 18 0.1520 0.8388 16.6 160.4 30.5
...
2021 01 06 12 59 27.8 -47 14 24 0.04926 0.9717 75.0 102.2 21.0
...
2021 01 12 08 01 07.7 +00 29 59 0.09047 1.0678 157.8 20.4 19.8
2021 01 13 07 49 14.4 +03 51 05 0.1045 1.0835 162.1 16.2 20.0
2021 01 14 07 40 09.0 +06 24 02 0.1191 1.0991 165.0 13.4 20.3
...
2021 01 20 07 12 40.1 +14 01 03 0.2126 1.1910 165.4 12.0 21.6
...
2021 01 28 07 00 52.9 +17 34 46 0.3461 1.3086 156.0 17.8 23.1
...
2021 02 12 06 58 32.8 +19 57 01 0.6180 1.5158 140.5 24.5 24.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-A177
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