399307 (1991 RJ2)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4280928186 ± 2.51e-08
Semi-major axis (a)2.2097660994 AU ± 1.66e-09
Inclination (i)8.95431265° ± 3.16e-06
Long. of Asc. Node (Ω)171.64362512° ± 9.68e-06
Arg. of Perihelion (ω)151.12925957° ± 1.22e-05
Mean Anomaly (M)157.06565460° ± 3.94e-06
Mean Motion (n)0.3000494370°/day ± 3.39e-10
Perihelion dist (q)1.26378110 AU ± 5.54e-08
Aphelion dist (Q)3.15575110 AU ± 5.54e-08
Orbital Period3.28487963 yr ± 3.71e-09
Physical Parameters
H (abs. magnitude)18.86
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.248″
Uncertainty0
Orbit TypeAmor
MOID0.261649 AU
Observations Used282
Oppositions23
Arc Total1991-2024
First Observation Used1991-09-08
Last Observation Used2024-12-23
Observations (290)
Date Type RA Dec Mag Band Observatory
2014-10-24 05:42:16 C 00 23 05.15 -10 43 39.9 R G45
2014-11-10 06:14:27 C 00 36 25.002 -10 00 37.22 L F51
2014-11-10 06:32:47 C 00 36 25.636 -10 00 32.91 L F51
2014-11-10 06:50:48 C 00 36 26.252 -10 00 28.65 L F51
2014-11-10 07:09:06 C 00 36 26.890 -10 00 24.39 L F51
2014-11-11 03:26:02 C 00 37 13.29 -09 55 27.2 u H21
2014-11-11 03:34:16 C 00 37 13.58 -09 55 25.4 u H21
2017-04-03 13:35:49 C 14 11 09.820 -04 18 35.13 L F51
2017-04-03 13:53:27 C 14 11 09.225 -04 18 27.39 L F51
2017-04-03 14:11:06 C 14 11 08.601 -04 18 19.46 L F51
2017-04-03 14:28:44 C 14 11 08.011 -04 18 11.55 L F51
2017-05-22 05:58:38 C 13 23 10.46 +03 24 38.1 q G96
2017-05-22 06:04:36 C 13 23 10.30 +03 24 38.8 q G96
2017-05-22 06:10:35 C 13 23 10.06 +03 24 39.6 q G96
2017-05-22 06:16:35 C 13 23 09.96 +03 24 40.1 q G96
2020-03-23 11:05:05 C 11 56 47.338 +02 33 06.50 U F51
2020-03-23 11:22:09 C 11 56 46.600 +02 33 13.10 U F51
2020-03-23 11:56:06 C 11 56 45.119 +02 33 26.62 U F51
2024-05-07 14:23:16 C 22 27 27.489 -01 06 52.39 X F52
2024-05-07 14:27:57 C 22 27 28.185 -01 06 48.88 X F52
2024-05-07 14:37:20 C 22 27 29.476 -01 06 41.81 X F52
2024-06-15 14:07:20 C 00 41 06.577 +09 33 03.37 X F52
2024-06-15 14:22:23 C 00 41 08.676 +09 33 11.89 X F52
2024-06-15 14:29:54 C 00 41 09.698 +09 33 16.04 X F52
2024-08-07 14:39:44 C 03 20 31.375 +15 42 15.26 X F52
2024-08-07 14:44:27 C 03 20 31.857 +15 42 15.24 X F52
2024-08-07 14:49:13 C 03 20 32.327 +15 42 15.27 X F52
2024-08-07 14:53:57 C 03 20 32.803 +15 42 15.23 X F52
2024-08-17 14:15:28 C 03 43 41.511 +15 29 42.33 X F52
2024-08-17 14:24:05 C 03 43 42.264 +15 29 41.52 X F52
2024-08-17 14:32:40 C 03 43 43.027 +15 29 40.56 X F52
2024-08-17 14:41:15 C 03 43 43.781 +15 29 39.86 X F52
2024-09-03 14:09:18 C 04 15 36.452 +14 17 25.98 X F52
2024-09-03 14:37:46 C 04 15 38.244 +14 17 19.05 X F52
2024-09-03 14:52:06 C 04 15 39.137 +14 17 15.53 X F52
2024-09-07 10:27:52 C 04 21 19.019 +13 53 06.40 V G96
2024-09-07 10:35:15 C 04 21 19.422 +13 53 04.06 V G96
2024-09-07 10:42:38 C 04 21 19.890 +13 53 02.22 V G96
2024-10-01 12:31:19 C 04 42 08.119 +10 30 05.21 X F52
2024-10-01 12:38:08 C 04 42 08.180 +10 30 02.46 X F52
2024-10-01 12:48:37 C 04 42 08.286 +10 29 58.44 X F52
2024-10-01 12:55:27 C 04 42 08.347 +10 29 55.51 X F52
2024-10-01 13:05:57 C 04 42 08.441 +10 29 51.33 X F52
2024-10-01 13:12:43 C 04 42 08.507 +10 29 48.50 X F52
2024-10-01 13:29:58 C 04 42 08.661 +10 29 41.43 X F52
2024-10-04 09:51:42 C 04 42 44.284 +10 01 19.20 V G96
2024-10-04 09:59:04 C 04 42 44.341 +10 01 15.60 V G96
2024-10-04 10:06:29 C 04 42 44.370 +10 01 12.72 V G96
2024-10-04 10:13:51 C 04 42 44.356 +10 01 09.91 V G96
2024-10-24 11:00:07 C 04 35 28.662 +06 37 27.05 V G96