[Iaude] MPEC X163: 2021 XA4 [a=1.22,e=0.45,i=12.1,H=26.5]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Wed Dec 8 16:20:19 EST 2021
M.P.E.C. 2021-X163 Issued 2021 December 8, 21:18 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2021 XA4
Observations:
K21X04A C2021 12 06.19722 03 11 27.91 -16 17 43.1 VEX163G96
K21X04A C2021 12 06.20290 03 11 35.96 -16 05 52.9 VEX163G96
K21X04A C2021 12 06.21423 03 11 51.83 -15 42 20.8 VEX163G96
K21X04A* C2021 12 08.24550003 39 26.15 +20 22 44.4 19.77GVEX163703
K21X04A C2021 12 08.25076703 39 27.62 +20 25 13.9 19.53GVEX163703
K21X04A C2021 12 08.25603503 39 29.01 +20 27 42.7 19.30GVEX163703
K21X04A mC2021 12 08.29212603 39 39.11 +20 44 34.1 18.92GVEX163I52
K21X04A mC2021 12 08.29236003 39 39.18 +20 44 40.5 19.05GVEX163I52
K21X04A mC2021 12 08.29259503 39 39.25 +20 44 47.0 19.12GVEX163I52
K21X04A mC2021 12 08.29283003 39 39.31 +20 44 53.3 19.20GVEX163I52
K21X04A mC2021 12 08.33420003 39 51.03 +21 03 37.4 19.53GVEX163I52
K21X04A mC2021 12 08.33443403 39 51.08 +21 03 44.0 19.57GVEX163I52
K21X04A mC2021 12 08.33466803 39 51.16 +21 03 50.0 19.57GVEX163I52
K21X04A mC2021 12 08.33490303 39 51.21 +21 03 56.5 19.51GVEX163I52
K21X04A C2021 12 08.56828 03 41 27.30 +22 42 27.7 19.7 RrEX163P93
K21X04A C2021 12 08.56992 03 41 27.71 +22 43 06.5 20.0 RrEX163P93
K21X04A C2021 12 08.57322 03 41 28.48 +22 44 24.2 19.6 RrEX163P93
Observer details:
703 Catalina Sky Survey. Observer D. Rankin. 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, D. Rankin, R. L. Seaman, F. C.
Shelly, K. W. Wierzchos. 0.68-m Schmidt + 10K CCD.
G96 Mt. Lemmon Survey. Observer K. W. Wierzchos. Measurers E. J.
Christensen, B. Gray, D. Rankin, F. C. Shelly. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. 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, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos.
P93 Space Tracking and Communications Center, JAXA. Observers S. Urakawa, T.
Fujiwara. 1.0-m f/3.0 reflector + CCD.
Orbital elements:
2021 XA4 Earth MOID = 0.0100 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5 Veres
M 75.60268 (2000.0) P Q
n 0.73043607 Peri. 265.65963 +0.92489894 +0.32167779
a 1.2210907 Node 75.47765 -0.20848867 +0.87489887
e 0.4487190 Incl. 12.08632 -0.31795351 +0.36204332
P 1.35 H 26.59 G 0.15 U 8
Residuals in seconds of arc
211206 G96 0.2+ 0.1+ 211208 I52 0.0 0.4+ 211208 I52 0.3+ 0.0
211206 G96 0.1+ 0.6- 211208 I52 0.0 0.3+ 211208 I52 0.1+ 0.3+
211206 G96 0.3- 0.5+ 211208 I52 0.0 0.4+ 211208 P93 0.5- 0.2+
211208 703 1.0+ 0.4+ 211208 I52 0.1- 0.2+ 211208 P93 0.2- 0.0
211208 703 0.9+ 0.4- 211208 I52 0.3+ 0.0 211208 P93 0.2- 0.1+
211208 703 0.3- 1.3- 211208 I52 0.1+ 0.3+
Ephemeris:
2021 XA4 a,e,i = 1.22, 0.45, 12 q = 0.6732
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 11 08 16 05 42.6 -43 56 41 0.2574 0.7833 31.6 138.5 29.8
...
2021 11 23 16 14 56.9 -49 33 38 0.1123 0.8916 29.6 146.8 29.5
...
2021 12 01 16 36 43.9 -59 28 04 0.04160 0.9536 37.8 140.7 26.5
...
2021 12 07 03 27 15.1 +04 55 47 0.01718 1.0005 152.6 26.9 19.0
2021 12 08 03 37 39.6 +18 17 24 0.02458 1.0084 160.6 18.9 19.5
2021 12 09 03 43 44.2 +25 14 32 0.03274 1.0161 161.8 17.6 20.1
...
2021 12 15 03 57 17.5 +37 16 09 0.08522 1.0626 155.8 22.3 22.4
...
2021 12 23 04 04 23.2 +40 17 03 0.1585 1.1233 149.6 26.3 24.0
...
2022 01 07 04 17 31.0 +41 07 15 0.3060 1.2314 139.2 31.4 25.8
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-X163
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