MPEC 2021-H62 : 2021 HX
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M.P.E.C. 2021-H62 Issued 2021 April 19, 06:05 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 HX
Observations:
K21H00X C2021 04 14.23312 10 52 56.68 +36 50 07.3 21.2 GVEH062G96
K21H00X C2021 04 14.23883 10 53 02.59 +36 49 09.7 20.9 GVEH062G96
K21H00X C2021 04 14.25023 10 53 14.26 +36 47 14.9 21.6 GVEH062G96
K21H00X C2021 04 16.26973611 25 36.057+31 06 40.63 20.97GVEH062F51
K21H00X C2021 04 16.28092611 25 45.175+31 04 49.02 21.32GVEH062F51
K21H00X C2021 04 16.29209611 25 54.196+31 02 58.02 22.06GVEH062F51
K21H00X C2021 04 16.30334511 26 03.332+31 01 05.17 21.07GVEH062F51
K21H00X* C2021 04 18.26328511 51 01.08 +25 40 09.0 21.34GVEH062G96
K21H00X C2021 04 18.26901711 51 04.76 +25 39 13.7 21.18GVEH062G96
K21H00X C2021 04 18.27475211 51 08.55 +25 38 20.1 21.80GVEH062G96
K21H00X C2021 04 18.28047411 51 12.21 +25 37 25.2 20.69GVEH062G96
K21H00X KC2021 04 18.35958511 52 03.74 +25 24 49.5 21.39GVEH062I52
K21H00X KC2021 04 18.36379111 52 06.52 +25 24 09.0 20.60GVEH062I52
K21H00X KC2021 04 18.36799611 52 09.20 +25 23 28.6 20.19GVEH062I52
K21H00X KC2021 04 19.00060011 59 05.67 +23 45 21.5 21.1 GVEH062J95
K21H00X KC2021 04 19.01941611 59 17.16 +23 42 28.6 21.1 GVEH062J95
K21H00X |C2021 04 19.08956 12 00 04.49 +23 33 47.1 21.6 GVEH062807
K21H00X |C2021 04 19.09370 12 00 06.94 +23 33 09.8 21.6 GVEH062807
K21H00X |C2021 04 19.09783 12 00 09.40 +23 32 32.2 21.6 GVEH062807
Observer details:
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
1.00-m f/10.0 astrograph + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, I. Smith. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observers D. Rankin, K. W. Wierzchos. Measurers B.
Gray, D. Rankin, F. C. Shelly, 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, R. L. Seaman, K. W. Wierzchos. 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, T. A. Pruyne, D.
Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m reflector +
CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2021 HX Earth MOID = 0.0433 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 331.94865 (2000.0) P Q
n 0.34764938 Peri. 90.10287 -0.89672361 -0.43991371
a 2.0031266 Node 63.79890 +0.38146675 -0.82389694
e 0.5341576 Incl. 3.10546 +0.22443238 -0.35730905
P 2.84 H 24.81 G 0.15 U 8
Residuals in seconds of arc
210414 G96 0.4- 0.0 210418 G96 0.2- 0.3+ 210419 J95 0.2+ 0.1+
210414 G96 0.3+ 0.0 210418 G96 0.7- 0.5- 210419 J95 0.7+ 0.2+
210414 G96 0.2+ 0.3+ 210418 G96 0.2+ 0.6+ 210419 807 0.1- 0.1-
210416 F51 0.1+ 0.2- 210418 G96 0.6- 0.1+ 210419 807 0.1- 0.1+
210416 F51 0.2+ 0.2- 210418 I52 0.1- 0.1+ 210419 807 0.3+ 0.1-
210416 F51 0.4- 0.3+ 210418 I52 0.3+ 0.1-
210416 F51 0.1- 0.0 210418 I52 0.6- 0.2-
Ephemeris:
2021 HX a,e,i = 2.00, 0.53, 3 q = 0.9331
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 03 20 04 03 24.3 +38 19 08 0.1658 0.9468 68.2 102.5 24.5
...
2021 04 04 06 51 17.1 +50 29 32 0.09538 0.9972 85.6 89.0 22.8
...
2021 04 12 10 08 25.2 +42 41 59 0.08231 1.0367 112.5 63.3 21.7
...
2021 04 18 11 47 58.8 +26 22 13 0.09382 1.0708 133.5 42.9 21.5
2021 04 19 11 59 06.6 +23 46 18 0.09736 1.0768 136.3 40.2 21.5
2021 04 20 12 09 05.2 +21 18 17 0.1013 1.0829 138.8 37.7 21.5
...
2021 04 26 12 51 38.0 +09 30 32 0.1311 1.1210 149.4 27.2 21.9
...
2021 05 04 13 22 56.1 +00 02 47 0.1823 1.1754 154.4 21.7 22.5
...
2021 05 19 13 53 51.7 -08 41 45 0.3016 1.2847 151.5 22.1 23.8
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-H62
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