IAA RAS IAA Minor Planet Database

2021 JW4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4871793486 ± 2.36e-05
Semi-major axis (a)2.2108257849 AU ± 1.08e-04
Inclination (i)6.53791305° ± 2.18e-04
Long. of Asc. Node (Ω)80.48317194° ± 3.33e-05
Arg. of Perihelion (ω)194.14254634° ± 3.93e-05
Mean Anomaly (M)122.60808953° ± 3.55e-02
Mean Motion (n)0.2998337348°/day ± 2.20e-05
Perihelion dist (q)1.13375712 AU ± 7.61e-05
Aphelion dist (Q)3.28789445 AU ± 1.69e-04
Orbital Period3.28724279 yr ± 2.41e-04
Physical Parameters
H (abs. magnitude)23.94
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.255″
Uncertainty2
Orbit TypeAmor
MOID0.119007 AU
Observations Used44
Oppositions1
Arc Total2021-2021
First Observation Used2021-05-04
Last Observation Used2021-07-15
Observations (47)
Date Type RA Dec Mag Band Observatory
2021-05-04 10:22:40 C 15 42 08.824 -02 00 57.12 – V F51
2021-05-04 10:40:42 C 15 42 09.306 -02 01 01.86 – V F51
2021-05-04 10:58:45 C 15 42 09.805 -02 01 06.72 – V F51
2021-05-04 11:16:49 C 15 42 10.296 -02 01 10.75 – V F51
2021-05-10 09:44:35 C 15 47 30.308 -02 51 33.52 – V F51
2021-05-10 10:01:49 C 15 47 30.812 -02 51 41.61 – U F51
2021-05-10 10:19:06 C 15 47 31.339 -02 51 49.68 – U F51
2021-05-10 10:36:21 C 15 47 31.849 -02 51 57.57 – U F51
2021-05-10 12:08:21 C 15 47 34.559 -02 52 40.08 – V F51
2021-05-11 07:02:50 C 15 48 19.18 -03 01 13.6 – V 807
2021-05-11 07:05:41 C 15 48 22.147 -03 01 44.78 – V 568
2021-05-11 07:08:32 C 15 48 22.247 -03 01 46.33 – V 568
2021-05-11 07:09:14 C 15 48 19.39 -03 01 17.0 – V 807
2021-05-11 07:09:57 C 15 48 22.302 -03 01 46.99 – V 568
2021-05-11 07:14:49 C 15 48 19.57 -03 01 19.9 – V 807
2021-05-18 08:39:07 C 15 55 49.11 -04 53 59.9 – V I52
2021-05-18 08:51:13 C 15 55 49.62 -04 54 09.7 – V I52
2021-05-18 12:30:55 C 15 55 59.993 -04 57 08.22 – V 568
2021-05-18 12:36:28 C 15 56 00.208 -04 57 12.87 – V 568
2021-05-20 11:48:12 C 15 58 27.520 -05 40 17.60 – U F51
2021-05-20 12:04:22 C 15 58 28.201 -05 40 33.26 – U F51
2021-05-20 12:20:32 C 15 58 28.913 -05 40 48.86 – U F51
2021-05-20 12:36:41 C 15 58 29.600 -05 41 04.45 – U F51
2021-05-22 05:57:31 C 16 00 49.17 -06 22 59.9 – u 807
2021-05-22 06:06:35 C 16 00 49.60 -06 23 09.4 – u 807
2021-05-31 09:54:04 C 16 16 40.93 -11 36 24.3 – V I52
2021-05-31 09:55:53 C 16 16 41.06 -11 36 28.5 – V I52
2021-05-31 09:57:42 C 16 16 41.29 -11 36 30.8 – V I52
2021-05-31 09:59:31 C 16 16 41.32 -11 36 33.7 – V I52
2021-06-10 06:30:16 C 16 43 51.24 -20 18 47.3 – V I52
2021-06-10 06:34:48 C 16 43 52.12 -20 18 59.1 – V I52
2021-06-10 06:39:20 C 16 43 52.42 -20 19 09.7 – V I52
2021-06-10 06:43:52 C 16 43 53.21 -20 19 19.9 – V I52
2021-06-11 00:06:40 C 16 46 26.24 -21 05 15.7 – V Z84
2021-06-11 00:19:55 C 16 46 28.06 -21 05 50.7 – V Z84
2021-06-11 00:26:33 C 16 46 28.95 -21 06 08.2 – V Z84
2021-06-11 00:33:10 C 16 46 29.77 -21 06 25.9 – V Z84
2021-06-11 00:46:25 C 16 46 31.60 -21 07 00.6 – V Z84
2021-06-21 03:30:27 C 17 33 01.08 -32 42 41.4 – u 807
2021-06-21 03:35:12 C 17 33 02.07 -32 42 55.8 – u 807
2021-06-21 03:40:04 C 17 33 03.10 -32 43 09.2 – u 807
2021-07-03 12:49:21 C 18 55 02.38 -44 32 05.1 – V 474
2021-07-03 12:59:36 C 18 55 05.24 -44 32 22.0 – V 474
2021-07-03 13:13:29 C 18 55 09.07 -44 32 45.1 – V 474
2021-07-15 07:11:44 C 20 12 54.20 -48 39 49.9 – V 807
2021-07-15 07:19:35 C 20 12 55.93 -48 39 51.4 – V 807
2021-07-15 07:27:38 C 20 12 57.64 -48 39 51.4 – V 807