IAA RAS IAA Minor Planet Database

2021 JJ9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3903702119 ± 4.31e-05
Semi-major axis (a)1.8795333989 AU ± 1.57e-04
Inclination (i)5.25090856° ± 4.30e-04
Long. of Asc. Node (Ω)277.95112003° ± 1.81e-04
Arg. of Perihelion (ω)338.58081689° ± 1.98e-04
Mean Anomaly (M)261.85053608° ± 7.72e-02
Mean Motion (n)0.3825050780°/day ± 4.80e-05
Perihelion dist (q)1.14581955 AU ± 1.25e-04
Aphelion dist (Q)2.61324725 AU ± 2.33e-04
Orbital Period2.57676653 yr ± 3.23e-04
Physical Parameters
H (abs. magnitude)22.29
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.265″
Uncertainty2
Orbit TypeAmor
MOID0.133369 AU
Observations Used43
Oppositions1
Arc Total2021-2021
First Observation Used2021-05-15
Last Observation Used2021-07-17
Observations (48)
Date Type RA Dec Mag Band Observatory
2021-05-15 02:18:43 C 14 04 57.53 -39 42 35.1 – V W94
2021-05-15 02:26:46 C 14 04 58.07 -39 42 35.9 – V W94
2021-05-15 02:34:47 C 14 04 58.59 -39 42 37.3 – V W94
2021-05-15 03:36:31 C 14 05 02.55 -39 42 43.1 – V W95
2021-05-15 03:44:10 C 14 05 03.04 -39 42 43.8 – V W95
2021-05-15 03:51:46 C 14 05 03.55 -39 42 44.5 – V W95
2021-05-16 04:25:58 C 14 07 06.88 -39 44 41.1 – V 807
2021-05-16 04:28:37 C 14 07 07.07 -39 44 41.3 – V 807
2021-05-16 04:31:17 C 14 07 07.26 -39 44 41.4 – V 807
2021-05-16 04:56:54 C 14 07 08.83 -39 44 47.0 – V W95
2021-05-16 05:04:31 C 14 07 09.38 -39 44 47.2 – V W95
2021-05-16 05:12:07 C 14 07 09.91 -39 44 47.3 – V W95
2021-05-16 11:41:26 C 14 07 46.73 -39 45 05.5 – q E23
2021-05-16 12:01:26 C 14 07 48.11 -39 45 08.3 – q E23
2021-05-16 12:21:25 C 14 07 49.45 -39 45 09.2 – q E23
2021-05-17 04:08:23 C 14 09 13.30 -39 46 03.9 – V W95
2021-05-17 04:15:57 C 14 09 13.86 -39 46 04.0 – V W95
2021-05-17 04:23:36 C 14 09 14.41 -39 46 03.6 – V W95
2021-05-20 09:50:20 C 14 17 00.35 -39 44 44.4 – V 474
2021-05-20 09:56:06 C 14 17 00.95 -39 44 44.3 – V 474
2021-05-20 09:58:58 C 14 17 01.24 -39 44 44.2 – V 474
2021-05-20 10:09:46 C 14 17 02.24 -39 44 43.7 – V 474
2021-05-31 00:09:44 C 14 51 46.93 -38 34 44.0 – u 807
2021-05-31 00:11:54 C 14 51 47.26 -38 34 43.0 – u 807
2021-05-31 00:14:24 C 14 51 47.64 -38 34 41.9 – u 807
2021-06-02 03:32:46 C 15 00 23.12 -38 05 39.8 – u 807
2021-06-02 03:35:07 C 15 00 23.45 -38 05 38.4 – u 807
2021-06-02 03:37:34 C 15 00 23.83 -38 05 38.0 – u 807
2021-06-11 05:19:53 C 15 41 32.00 -34 58 03.5 – V I52
2021-06-11 05:28:24 C 15 41 33.49 -34 57 54.9 – V I52
2021-06-11 05:36:54 C 15 41 35.14 -34 57 46.3 – V I52
2021-06-11 05:45:24 C 15 41 36.64 -34 57 36.4 – V I52
2021-06-12 04:23:44 C 15 46 07.90 -34 31 10.7 – V W88
2021-06-12 04:53:19 C 15 46 13.35 -34 30 35.2 – V W88
2021-06-12 05:02:59 C 15 46 15.13 -34 30 23.9 – V W88
2021-06-16 06:01:57 C 16 05 55.37 -32 31 40.3 – V I52
2021-06-16 06:03:01 C 16 05 55.55 -32 31 38.7 – V I52
2021-06-16 06:04:05 C 16 05 55.74 -32 31 37.3 – V I52
2021-06-16 06:05:09 C 16 05 55.94 -32 31 35.5 – V I52
2021-06-19 06:42:55 C 16 20 33.48 -30 52 45.5 – V I52
2021-06-19 06:44:01 C 16 20 33.65 -30 52 43.7 – V I52
2021-06-19 06:45:08 C 16 20 33.80 -30 52 41.5 – V I52
2021-06-19 06:46:14 C 16 20 34.00 -30 52 40.3 – V I52
2021-06-21 02:37:07 C 16 29 17.47 -29 49 23.4 – u 807
2021-06-21 02:41:57 C 16 29 18.35 -29 49 16.4 – u 807
2021-07-17 01:38:36 C 18 06 51.00 -16 29 05.4 – u 807
2021-07-17 01:43:22 C 18 06 51.52 -16 28 59.9 – u 807
2021-07-17 01:48:08 C 18 06 51.99 -16 28 55.7 – u 807