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
1991-09-08 07:49:15 A 22 55 34.94 -01 30 05.8 16.5 675
1991-09-08 08:34:29 A 22 55 36.90 -01 31 00.9 675
1991-09-09 06:17:15 A 22 56 51.58 -01 57 40.7 675
1991-09-11 07:10:14 22 59 34.28 -02 56 29.6 17.5 675
1991-09-11 08:30:29 22 59 38.23 -02 58 07.5 675
1991-09-26 10:14:11 A 23 18 23.28 -08 53 35.4 413
1991-09-28 11:40:19 A 23 20 48.52 -09 29 02.8 413
1991-10-02 03:44:15 A 23 25 05.55 -10 24 15.8 i 691
1991-10-02 04:06:29 A 23 25 06.53 -10 24 29.2 i 691
1991-10-02 04:25:55 A 23 25 07.35 -10 24 40.0 i 691
1991-10-03 04:06:41 C 23 26 16.01 -10 37 34.6 a 691
1991-10-03 04:19:07 C 23 26 16.56 -10 37 41.3 a 691
1991-10-03 04:42:11 C 23 26 17.56 -10 37 53.6 a 691
1991-10-03 08:33:52 C 23 26 27.46 -10 39 55.2 a 691
1991-10-03 08:49:40 C 23 26 28.17 -10 40 03.5 a 691
1991-10-03 09:03:10 C 23 26 28.76 -10 40 10.2 a 691
1991-10-05 12:20:02 A 23 28 58.07 -11 04 48.8 413
1991-10-05 13:20:02 A 23 29 00.48 -11 05 15.1 413
1991-10-16 05:44:05 A 23 41 28.64 -12 20 39.0 i 691
1991-10-16 06:02:12 A 23 41 29.46 -12 20 41.6 i 691
1991-10-16 06:30:55 A 23 41 30.70 -12 20 45.9 i 691
1991-10-29 03:31:38 A 23 57 11.63 -12 20 10.7 i 691
1991-10-29 04:01:29 A 23 57 13.03 -12 20 06.1 i 691
1991-10-29 04:32:56 A 23 57 14.59 -12 20 01.7 i 691
2001-09-21 11:04:19 C 04 29 21.16 +11 56 03.5 d 691
2001-09-21 11:25:34 C 04 29 21.74 +11 55 56.2 d 691
2001-09-21 11:46:52 C 04 29 22.36 +11 55 47.9 d 691
2001-09-22 11:26:33 C 04 30 04.09 +11 46 39.9 d 691
2001-09-22 11:33:32 C 04 30 04.25 +11 46 37.3 d 691
2001-09-22 11:40:49 C 04 30 04.47 +11 46 34.4 d 691
2001-10-09 11:19:24 C 04 34 18.32 +08 54 02.5 d 691
2001-10-09 11:25:37 C 04 34 18.31 +08 53 59.4 d 691
2001-10-09 11:31:09 C 04 34 18.15 +08 53 58.5 d 691
2004-05-14 07:43:40 C 15 35 02.04 -01 05 57.4 c 691
2004-05-14 08:24:11 C 15 35 00.15 -01 05 36.9 c 691
2004-05-14 09:21:29 C 15 34 57.48 -01 05 07.8 c 691
2004-05-19 07:34:29 C 15 29 34.91 -00 07 28.6 c 691
2004-05-19 08:12:25 C 15 29 33.03 -00 07 10.9 c 691
2004-05-19 08:50:07 C 15 29 31.17 -00 06 53.0 c 691
2004-06-18 05:42:00 C 15 01 26.98 +02 51 44.3 c 673
2004-06-18 05:48:00 C 15 01 26.78 +02 51 44.4 c 673
2004-06-18 05:53:59 C 15 01 26.64 +02 51 44.4 c 673
2014-05-22 10:44:32 C 20 04 53.13 -01 02 00.6 o 291
2014-05-22 10:48:03 C 20 04 53.45 -01 01 58.0 o 291
2014-05-22 10:51:33 C 20 04 53.76 -01 01 55.3 o 291
2014-06-21 09:44:57 C 21 13 02.48 +08 17 02.8 R G45
2014-06-21 10:01:20 C 21 13 04.03 +08 17 15.3 R G45
2014-06-21 10:17:44 C 21 13 05.52 +08 17 27.6 R G45
2014-06-21 10:34:08 C 21 13 07.07 +08 17 40.0 R G45
2014-06-25 07:16:15 C 21 22 15.05 +09 25 13.2 u H21