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
2020-03-22 11:22:24 C 12 47 05.405 -13 41 15.35 U F52
2020-03-22 11:40:14 C 12 47 02.598 -13 41 21.42 U F52
2020-04-02 06:17:32 C 12 11 48.40 -14 34 12.0 V 703
2020-04-02 06:25:10 C 12 11 47.53 -14 34 11.5 V 703
2020-04-02 06:40:26 C 12 11 45.63 -14 34 14.3 V 703
2020-04-03 05:25:53 C 12 09 08.29 -14 36 04.4 V G96
2020-04-03 05:34:00 C 12 09 07.33 -14 36 05.1 V G96
2020-04-03 05:42:07 C 12 09 06.37 -14 36 05.5 V G96
2020-04-03 05:50:14 C 12 09 05.43 -14 36 06.3 V G96
2020-04-12 14:25:31 C 11 47 45.16 -14 39 50.0 q D29
2020-04-12 14:45:53 C 11 47 43.51 -14 39 49.2 q D29
2020-04-12 15:06:14 C 11 47 41.82 -14 39 49.1 q D29
2020-04-16 03:54:00 C 11 41 46.23 -14 37 04.6 V G96
2020-04-16 04:02:09 C 11 41 45.69 -14 37 03.9 V G96
2020-04-16 04:10:18 C 11 41 45.15 -14 37 03.9 V G96
2020-04-16 04:18:27 C 11 41 44.61 -14 37 03.4 V G96
2020-04-27 05:45:04 C 11 29 47.66 -14 26 07.3 V G96
2020-04-27 05:52:27 C 11 29 47.50 -14 26 07.5 V G96
2020-04-27 05:59:51 C 11 29 47.33 -14 26 07.0 V G96
2020-04-27 06:07:16 C 11 29 47.07 -14 26 07.8 V G96
2020-04-27 14:24:06 C 11 29 33.46 -14 25 51.6 q D29
2020-04-27 14:44:27 C 11 29 32.80 -14 25 50.5 q D29