2021 RW99

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2993466494 ± 1.24e-06
Semi-major axis (a)1.2330972198 AU ± 1.44e-06
Inclination (i)5.85335098° ± 2.66e-05
Long. of Asc. Node (Ω)5.68332293° ± 2.95e-05
Arg. of Perihelion (ω)118.34922798° ± 2.60e-05
Mean Anomaly (M)290.97384421° ± 1.76e-03
Mean Motion (n)0.7198073854°/day ± 1.26e-06
Perihelion dist (q)0.86397370 AU ± 1.83e-06
Aphelion dist (Q)1.60222074 AU ± 2.42e-06
Orbital Period1.36929171 yr ± 2.39e-06
Physical Parameters
H (abs. magnitude)22.56
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.186″
Uncertainty1
Orbit TypeApollo
MOID0.006312 AU
Observations Used72
Oppositions1
Arc Total2021-2022
First Observation Used2021-09-09
Last Observation Used2022-05-30
Observations (75)
Date Type RA Dec Mag Band Observatory
2021-10-31 05:03:08 C 00 06 42.82 +24 57 44.0 V 703
2021-11-01 05:16:07 C 00 01 11.919 +25 21 39.19 U F51
2021-11-01 05:35:01 C 00 01 07.250 +25 21 58.78 U F51
2021-11-01 05:54:02 C 00 01 02.521 +25 22 18.41 U F51
2021-11-01 10:29:23 C 23 59 53.673 +25 26 43.37 U F51
2021-11-01 11:22:22 C 23 59 40.652 +25 27 30.65 U F51
2021-11-06 03:37:22 C 23 32 19.59 +27 12 18.3 V G96
2021-11-06 03:45:40 C 23 32 17.33 +27 12 25.7 V G96
2021-11-06 03:54:00 C 23 32 15.04 +27 12 33.0 V G96
2021-11-06 04:02:20 C 23 32 12.80 +27 12 40.4 V G96
2021-11-08 17:30:09 C 23 16 21.40 +28 05 02.2 V K88
2021-11-08 17:34:25 C 23 16 20.22 +28 05 06.1 V K88
2021-11-12 06:49:20 C 22 53 30.709 +29 11 47.55 U F51
2021-11-12 07:10:18 C 22 53 24.571 +29 12 02.01 U F51
2021-11-12 07:28:53 C 22 53 19.162 +29 12 14.45 U F51
2021-11-15 03:54:19 C 22 34 30.72 +29 58 21.5 o 291
2021-11-15 04:09:03 C 22 34 26.37 +29 58 29.7 o 291
2021-11-15 04:23:51 C 22 34 22.00 +29 58 38.1 o 291
2021-12-01 01:34:51 C 20 43 31.74 +31 40 46.7 o 291
2021-12-01 01:38:08 C 20 43 30.67 +31 40 46.1 o 291
2021-12-01 01:41:28 C 20 43 29.66 +31 40 44.5 o 291
2022-05-28 06:07:21 C 17 13 02.12 -42 39 31.9 V 807
2022-05-28 06:15:20 C 17 13 00.90 -42 39 31.6 V 807
2022-05-28 06:23:17 C 17 12 59.79 -42 39 30.8 V 807
2022-05-30 10:44:37 C 17 05 46.278 -42 35 54.11 V T12