27031 (1998 RO4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4263352489 ± 1.08e-08
Semi-major axis (a)2.1382953708 AU ± 5.86e-10
Inclination (i)5.35636020° ± 9.58e-07
Long. of Asc. Node (Ω)191.76085314° ± 9.41e-06
Arg. of Perihelion (ω)111.91346324° ± 1.02e-05
Mean Anomaly (M)268.64042015° ± 1.21e-06
Mean Motion (n)0.3152177992°/day ± 1.30e-10
Perihelion dist (q)1.22666468 AU ± 2.31e-08
Aphelion dist (Q)3.04992606 AU ± 2.31e-08
Orbital Period3.12681037 yr ± 1.28e-09
Physical Parameters
H (abs. magnitude)17.89
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.190″
Uncertainty0
Orbit TypeAmor
MOID0.230503 AU
Observations Used906
Oppositions50
Arc Total1951-2025
First Observation Used1951-08-26
Last Observation Used2025-01-22
Observations (1000)
Date Type RA Dec Mag Band Observatory
2020-07-24 14:33:44 C 02 06 55.889 +16 30 40.03 U F52
2020-07-26 10:42:35 C 02 11 09.29 +16 43 37.7 U I41
2020-07-26 11:11:15 C 02 11 11.95 +16 43 45.9 U I41
2020-08-14 19:25:10 C 02 49 06.32 +18 06 12.8 q D29
2020-08-14 19:45:32 C 02 49 07.66 +18 06 14.8 q D29
2020-08-14 20:05:53 C 02 49 08.93 +18 06 16.1 q D29
2020-08-19 11:09:19 C 02 56 12.63 +18 11 40.0 U I41
2020-08-19 11:53:53 C 02 56 15.19 +18 11 41.3 U I41
2020-08-19 12:02:57 C 02 56 15.70 +18 11 41.6 U I41
2020-08-20 10:29:20 C 02 57 35.01 +18 12 06.6 U I41
2020-08-20 10:45:22 C 02 57 35.91 +18 12 06.9 U I41
2020-08-20 11:35:38 C 02 57 38.70 +18 12 07.7 U I41
2020-08-21 09:41:37 C 02 58 54.58 +18 12 17.8 U I41
2020-08-21 10:46:30 C 02 58 58.02 +18 12 18.9 U I41
2020-08-21 11:46:09 C 02 59 01.25 +18 12 19.7 U I41
2020-08-22 11:11:18 C 03 00 18.87 +18 12 16.5 U I41
2020-08-22 11:43:52 C 03 00 20.57 +18 12 16.6 U I41
2020-08-24 10:08:53 C 03 02 47.00 +18 11 27.5 U I41
2020-08-24 10:47:36 C 03 02 48.90 +18 11 26.4 U I41
2020-08-24 11:28:37 C 03 02 50.85 +18 11 25.5 U I41
2020-08-24 13:25:13 C 03 02 56.842 +18 11 24.31 U F52
2020-08-24 13:43:20 C 03 02 57.702 +18 11 24.05 U F52
2020-08-24 14:22:22 C 03 02 59.562 +18 11 22.99 U F52
2020-08-25 10:19:29 C 03 03 59.14 +18 10 40.1 U I41
2020-08-25 10:50:13 C 03 04 00.58 +18 10 39.1 U I41
2020-08-25 12:02:43 C 03 04 03.92 +18 10 36.8 U I41
2020-08-27 09:57:36 C 03 06 13.45 +18 08 23.2 V G96
2020-08-27 10:04:18 C 03 06 13.74 +18 08 23.1 V G96
2020-08-27 10:11:02 C 03 06 14.04 +18 08 22.8 V G96
2020-08-27 10:17:43 C 03 06 14.33 +18 08 22.2 V G96
2020-09-02 13:02:12 C 03 11 59.064 +17 55 21.14 U F51
2020-09-02 13:19:09 C 03 11 59.580 +17 55 19.20 U F51
2020-09-02 13:36:07 C 03 12 00.097 +17 55 17.32 U F51
2020-09-02 13:53:17 C 03 12 00.607 +17 55 15.39 U F51
2020-09-14 09:50:27 C 03 17 50.21 +17 04 35.3 V G96
2020-09-14 09:58:33 C 03 17 50.25 +17 04 33.3 V G96
2020-09-14 10:06:37 C 03 17 50.28 +17 04 31.3 V G96
2020-09-14 10:14:42 C 03 17 50.33 +17 04 29.7 V G96
2020-09-16 18:50:10 C 03 18 07.198 +16 50 38.44 V P07
2020-09-16 19:36:55 C 03 18 07.150 +16 50 27.28 V P07
2020-09-16 20:28:17 C 03 18 07.114 +16 50 12.66 V P07
2020-09-16 21:09:14 C 03 18 07.039 +16 50 01.90 V P07
2020-09-17 11:52:20 C 03 18 08.85 +16 46 01.5 V T08
2020-09-17 11:53:42 C 03 18 08.84 +16 46 01.9 V T08
2020-09-17 11:59:03 C 03 18 08.82 +16 46 01.0 V T08
2020-09-17 12:03:02 C 03 18 08.89 +16 45 59.3 V T08
2020-09-18 10:57:51 C 03 18 08.08 +16 39 45.6 U I41
2020-09-18 11:05:23 C 03 18 08.06 +16 39 43.5 U I41
2020-09-18 12:06:40 C 03 18 07.79 +16 39 26.6 U I41
2020-09-18 12:36:46 C 03 18 07.64 +16 39 18.0 U I41