152561 (1991 RB)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4856931504 ± 5.18e-08
Semi-major axis (a)1.4544171050 AU ± 3.38e-09
Inclination (i)19.57444257° ± 1.21e-05
Long. of Asc. Node (Ω)359.28407359° ± 1.42e-05
Arg. of Perihelion (ω)68.97349018° ± 1.88e-05
Mean Anomaly (M)144.54921983° ± 2.02e-05
Mean Motion (n)0.5619255973°/day ± 1.96e-09
Perihelion dist (q)0.74801668 AU ± 7.54e-08
Aphelion dist (Q)2.16081753 AU ± 7.56e-08
Orbital Period1.75401564 yr ± 6.12e-09
Physical Parameters
H (abs. magnitude)19.10
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.419″
Uncertainty0
Orbit TypeApollo
MOID0.039536 AU
Observations Used114
Oppositions18
Arc Total1977-2020
First Observation Used1977-08-19
Last Observation Used2020-04-27
Observations (122)
Date Type RA Dec Mag Band Observatory
2006-02-22 12:47:00 C 14 38 52.83 -14 30 05.8 r G96
2006-02-25 11:47:49 C 14 34 35.04 -15 30 43.4 r G96
2006-02-25 11:55:54 C 14 34 34.50 -15 30 50.2 r G96
2006-02-25 12:04:09 C 14 34 33.88 -15 30 57.1 r G96
2006-02-25 12:12:43 C 14 34 33.34 -15 31 03.9 r G96
2012-07-16 08:10:21 C 22 18 22.22 -55 14 33.7 u 807
2012-07-16 08:24:24 C 22 18 21.44 -55 14 45.7 u 807
2012-07-16 08:39:37 C 22 18 20.56 -55 14 58.7 u 807
2013-02-20 09:41:06 C 14 36 25.10 -09 59 57.4 u H21
2013-02-20 09:45:10 C 14 36 24.78 -10 00 01.1 u H21
2013-02-20 09:49:14 C 14 36 24.45 -10 00 04.5 u H21
2013-02-20 09:53:17 C 14 36 24.15 -10 00 08.4 u H21
2013-02-20 09:58:01 C 14 36 23.81 -10 00 13.1 u H21
2013-02-24 10:44:26 C 14 28 43.22 -11 28 45.0 q H21
2013-02-24 10:49:33 C 14 28 42.75 -11 28 49.6 q H21
2013-02-24 10:54:40 C 14 28 42.29 -11 28 54.2 q H21
2013-02-24 10:59:47 C 14 28 41.81 -11 28 58.7 q H21
2013-03-14 09:51:25 C 13 39 15.51 -16 54 05.5 u 703
2013-03-14 10:02:27 C 13 39 13.78 -16 54 12.1 u 703
2013-03-14 10:13:35 C 13 39 12.20 -16 54 20.3 u 703
2013-04-14 05:37:02 C 12 06 11.57 -18 42 48.5 q 448
2013-04-14 06:09:12 C 12 06 08.68 -18 42 45.0 q 448
2013-04-14 06:35:41 C 12 06 06.35 -18 42 41.5 q 448
2020-01-27 03:40:54 C 15 14 59.34 +06 04 04.3 V C95
2020-01-27 03:55:24 C 15 14 58.57 +06 03 48.5 V C95
2020-02-05 15:14:09 C 15 02 42.85 +01 54 43.9 V T08
2020-02-05 15:19:56 C 15 02 42.48 +01 54 37.8 V T08
2020-02-05 15:31:16 C 15 02 41.74 +01 54 26.0 V T08
2020-02-05 15:46:28 C 15 02 40.70 +01 54 09.0 V T08
2020-02-21 13:59:14 C 14 31 09.06 -04 49 27.9 V T08
2020-02-21 14:06:33 C 14 31 08.34 -04 49 35.2 V T08
2020-02-21 14:10:36 C 14 31 07.83 -04 49 40.0 V T08
2020-02-21 14:25:21 C 14 31 06.14 -04 49 54.6 V T08
2020-02-23 13:34:04 C 14 25 52.35 -05 37 15.5 V T05
2020-02-23 13:52:38 C 14 25 50.14 -05 37 33.9 V T05
2020-02-23 13:57:22 C 14 25 49.55 -05 37 37.7 V T05
2020-02-23 14:19:59 C 14 25 46.83 -05 38 01.2 V T05
2020-02-27 10:34:52 C 14 14 35.64 -07 07 52.4 V 703
2020-02-27 10:42:24 C 14 14 34.61 -07 07 58.4 V 703
2020-02-27 10:49:58 C 14 14 33.64 -07 08 05.5 V 703
2020-02-27 10:57:31 C 14 14 32.70 -07 08 14.0 V 703
2020-03-04 14:24:16 C 13 54 14.63 -09 20 56.0 V T08
2020-03-04 14:34:50 C 13 54 13.04 -09 21 04.9 V T08
2020-03-04 14:39:43 C 13 54 12.56 -09 21 11.9 V T08
2020-03-04 15:51:27 C 13 54 01.43 -09 22 09.1 V T08
2020-03-21 11:08:29 C 12 50 48.12 -13 32 35.7 V T05
2020-03-21 11:12:58 C 12 50 47.46 -13 32 38.1 V T05
2020-03-21 11:20:36 C 12 50 46.23 -13 32 40.1 V T05
2020-03-21 11:37:52 C 12 50 43.43 -13 32 46.8 V T05
2020-03-22 11:04:35 C 12 47 08.212 -13 41 09.15 U F52