MPEC 2021-X101 : 2021 XZ1
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M.P.E.C. 2021-X101 Issued 2021 December 4, 15:04 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 XZ1
Observations:
K21X01Z* C2021 12 02.25824404 38 33.86 +06 30 28.0 21.38GVEX101G96
K21X01Z C2021 12 02.26341104 38 32.92 +06 31 01.7 21.38GVEX101G96
K21X01Z C2021 12 02.26858604 38 31.97 +06 31 35.3 21.42GVEX101G96
K21X01Z C2021 12 02.27376204 38 31.03 +06 32 08.8 21.68GVEX101G96
K21X01Z KC2021 12 02.39491604 38 08.80 +06 45 12.2 21.59GVEX101V06
K21X01Z KC2021 12 02.39618804 38 08.55 +06 45 20.2 21.73GVEX101V06
K21X01Z KC2021 12 02.39745904 38 08.33 +06 45 28.3 21.39GVEX101V06
K21X01Z KC2021 12 03.21605004 35 50.47 +08 13 19.9 VEX101I52
K21X01Z KC2021 12 03.22051404 35 49.66 +08 13 46.9 VEX101I52
K21X01Z KC2021 12 04.20404704 33 01.94 +09 58 10.2 21.6 VuEX101H21
K21X01Z KC2021 12 04.20810404 33 01.20 +09 58 36.1 22.0 VuEX101H21
K21X01Z KC2021 12 04.38058104 32 30.69 +10 16 48.3 VEX101I52
K21X01Z KC2021 12 04.38515204 32 29.89 +10 17 17.4 21.54GVEX101I52
K21X01Z KC2021 12 04.38972504 32 29.07 +10 17 45.7 21.28GVEX101I52
K21X01Z C2021 12 04.43551904 32 20.91 +10 22 32.8 21.1 GVEX101H01
K21X01Z C2021 12 04.43931504 32 20.25 +10 22 56.7 21.6 GVEX101H01
K21X01Z C2021 12 04.44944404 32 18.48 +10 24 00.1 21.8 GVEX101H01
K21X01Z C2021 12 04.45638704 32 17.26 +10 24 43.7 21.3 GVEX101H01
Observer details:
G96 Mt. Lemmon Survey. Observer A. R. Gibbs. 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. 1.5-m reflector + 10K CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 1.3-m f/4.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers D. Rankin, D. C. Fuls.
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.
V06 Catalina Sky Survey-Kuiper. 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. 1.55-m reflector + 1K CCD.
Orbital elements:
2021 XZ1 Earth MOID = 0.2470 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5 Veres
M 43.77625 (2000.0) P Q
n 0.44411019 Peri. 310.06684 +0.81944197 -0.37359560
a 1.7014096 Node 76.02204 +0.55780284 +0.69420017
e 0.3249296 Incl. 26.61144 -0.13179855 +0.61523366
P 2.22 H 23.61 G 0.15 U 9
Residuals in seconds of arc
211202 G96 0.1- 0.2- 211202 V06 0.1+ 0.0 211204 I52 0.5- 0.0
211202 G96 0.1+ 0.0 211203 I52 0.1+ 0.0 211204 I52 0.5- 0.4-
211202 G96 0.0 0.1+ 211203 I52 (0.1+ 1.6-) 211204 H01 0.1+ 0.1+
211202 G96 0.2+ 0.1+ 211204 H21 0.4+ 0.1- 211204 H01 0.2+ 0.1+
211202 V06 0.1+ 0.2+ 211204 H21 0.3+ 0.1+ 211204 H01 0.3+ 0.0
211202 V06 0.2- 0.0 211204 I52 0.8- 0.3- 211204 H01 0.2+ 0.1+
Ephemeris:
2021 XZ1 a,e,i = 1.70, 0.32, 27 q = 1.1486
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 11 04 05 43 23.2 -32 50 06 0.3245 1.1637 114.3 50.9 23.4
...
2021 11 19 05 14 56.8 -16 13 55 0.2613 1.1929 137.0 34.4 22.5
...
2021 11 27 04 53 35.0 -02 59 29 0.2476 1.2138 153.8 21.1 22.0
...
2021 12 03 04 36 26.5 +07 50 23 0.2520 1.2317 165.8 11.3 21.8
2021 12 04 04 33 36.3 +09 36 50 0.2541 1.2349 167.3 10.1 21.7
2021 12 05 04 30 47.6 +11 21 44 0.2566 1.2381 168.5 9.1 21.7
...
2021 12 11 04 14 50.5 +21 02 52 0.2792 1.2581 166.7 10.4 22.0
...
2021 12 19 03 57 31.8 +31 09 02 0.3271 1.2870 154.6 19.2 22.7
...
2022 01 03 03 41 34.7 +42 22 38 0.4535 1.3464 135.9 30.6 23.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-X101
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