IAA RAS IAA Minor Planet Database

2021 JC9

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2271520511 ± 2.26e-04
Semi-major axis (a)1.3493978176 AU ± 4.18e-04
Inclination (i)22.85052970° ± 1.08e-02
Long. of Asc. Node (Ω)57.70278395° ± 1.32e-04
Arg. of Perihelion (ω)171.73586518° ± 4.52e-03
Mean Anomaly (M)320.64289223° ± 4.87e-01
Mean Motion (n)0.6287851422°/day ± 2.92e-04
Perihelion dist (q)1.04287934 AU ± 4.44e-04
Aphelion dist (Q)1.65591630 AU ± 5.97e-04
Orbital Period1.56750886 yr ± 7.29e-04
Physical Parameters
H (abs. magnitude)25.39
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.408″
Uncertainty3
Orbit TypeAmor
MOID0.032507 AU
Observations Used43
Oppositions1
Arc Total2021-2021
First Observation Used2021-05-13
Last Observation Used2021-05-29
Observations (43)
Date Type RA Dec Mag Band Observatory
2021-05-13 12:51:14 C 15 59 04.082 +32 15 05.37 – V F51
2021-05-13 14:51:12 C 15 58 24.116 +31 48 56.26 – V F51
2021-05-14 08:31:18 C 15 53 11.09 +27 40 04.8 – V U68
2021-05-14 08:36:07 C 15 53 09.34 +27 38 50.9 – V U68
2021-05-14 09:15:21 C 15 52 54.98 +27 28 47.1 – V U68
2021-05-14 09:20:09 C 15 52 53.15 +27 27 33.4 – V U68
2021-05-15 08:47:35 C 15 45 01.86 +20 44 21.4 – V U68
2021-05-15 08:51:46 C 15 45 00.18 +20 43 01.4 – V U68
2021-05-15 09:03:46 C 15 45 03.625 +20 40 05.77 – V F51
2021-05-15 09:17:57 C 15 44 49.54 +20 34 38.4 – V U68
2021-05-15 09:22:08 C 15 44 47.86 +20 33 18.5 – V U68
2021-05-16 08:18:44 C 15 36 13.93 +12 26 51.6 – V H01
2021-05-16 08:24:41 C 15 36 11.27 +12 24 33.0 – V H01
2021-05-16 08:38:05 C 15 36 05.26 +12 19 20.0 – V H01
2021-05-16 08:48:19 C 15 36 00.70 +12 15 20.3 – V H01
2021-05-16 09:05:13 C 15 36 04.600 +12 09 37.68 – V F51
2021-05-16 18:54:15 C 15 32 01.28 +08 10 36.6 – V N51
2021-05-16 19:04:11 C 15 31 56.57 +08 06 26.4 – V N51
2021-05-16 19:12:50 C 15 31 52.50 +08 02 49.0 – V N51
2021-05-16 19:24:04 C 15 31 47.18 +07 58 05.1 – V N51
2021-05-16 20:14:02 C 15 31 36.19 +07 35 56.0 – V 033
2021-05-16 20:14:27 C 15 31 36.01 +07 35 45.3 – V 033
2021-05-16 20:15:16 C 15 31 35.64 +07 35 24.6 – V 033
2021-05-16 21:42:40 C 15 30 58.64 +06 58 40.4 – V I93
2021-05-16 21:46:12 C 15 30 56.97 +06 57 10.5 – V I93
2021-05-16 21:56:10 C 15 30 52.38 +06 52 55.2 – V I93
2021-05-17 23:29:15 C 15 19 26.50 -04 50 14.7 – V 203
2021-05-17 23:43:51 C 15 19 18.89 -04 57 18.7 – V 203
2021-05-17 23:45:45 C 15 19 17.93 -04 58 15.0 – V 204
2021-05-17 23:56:43 C 15 19 12.20 -05 03 34.2 – V 204
2021-05-17 23:58:43 C 15 19 11.09 -05 04 31.9 – V 203
2021-05-18 21:13:07 C 15 08 50.42 -15 35 54.4 – Z L34
2021-05-18 22:39:03 C 15 08 00.49 -16 18 53.6 – Z L34
2021-05-18 23:00:28 C 15 07 47.96 -16 29 35.5 – Z L34
2021-05-20 10:50:29 C 14 47 39.21 -33 29 07.8 – V 474
2021-05-20 10:51:25 C 14 47 38.53 -33 29 32.4 – V 474
2021-05-20 10:51:54 C 14 47 38.18 -33 29 45.2 – V 474
2021-05-20 10:53:19 C 14 47 37.24 -33 30 22.0 – V 474
2021-05-20 10:53:47 C 14 47 37.00 -33 30 34.5 – V 474
2021-05-28 23:45:03 C 11 54 12.77 -73 30 42.2 – V 807
2021-05-28 23:51:50 C 11 54 05.65 -73 31 03.5 – V 807
2021-05-29 00:05:24 C 11 53 51.44 -73 31 45.3 – V 807
2021-05-29 00:12:10 C 11 53 44.27 -73 32 05.3 – V 807