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
2020-09-21 09:55:48 C 03 17 48.15 +16 19 17.7 U I41
2020-09-21 10:10:17 C 03 17 48.00 +16 19 13.4 U I41
2020-09-23 13:38:34 C 03 17 15.98 +16 03 14.6 V T05
2020-09-23 13:45:10 C 03 17 15.84 +16 03 11.9 V T05
2020-09-23 13:59:03 C 03 17 15.61 +16 03 08.3 V T05
2020-09-23 14:47:49 C 03 17 14.88 +16 02 52.6 V T05
2020-09-25 00:05:35 C 03 16 46.76 +15 51 55.3 V K88
2020-09-25 00:17:51 C 03 16 46.58 +15 51 50.3 V K88
2020-09-25 00:30:10 C 03 16 46.38 +15 51 46.1 V K88
2020-09-26 08:53:53 C 03 16 13.05 +15 40 51.3 V G96
2020-09-26 09:01:23 C 03 16 12.90 +15 40 48.5 V G96
2020-09-26 09:08:52 C 03 16 12.72 +15 40 46.1 V G96
2020-09-26 09:16:21 C 03 16 12.57 +15 40 43.5 V G96
2020-10-12 09:30:37 C 03 03 18.26 +13 08 08.0 U I41
2020-10-12 10:10:35 C 03 03 16.29 +13 07 50.4 U I41
2020-10-12 13:23:35 C 03 03 07.224 +13 06 28.68 U F51
2020-10-12 13:42:06 C 03 03 06.312 +13 06 20.51 U F51
2020-10-12 14:00:38 C 03 03 05.400 +13 06 12.35 U F51
2020-10-12 14:19:14 C 03 03 04.473 +13 06 04.26 U F51
2020-10-14 07:33:09 C 03 01 07.53 +12 47 57.0 V 703
2020-10-14 07:40:43 C 03 01 07.12 +12 47 52.6 V 703
2020-10-14 07:48:17 C 03 01 06.80 +12 47 49.8 V 703
2020-10-14 07:55:51 C 03 01 06.31 +12 47 46.2 V 703
2020-10-14 09:37:18 C 03 01 01.21 +12 47 01.4 U I41
2020-10-14 11:26:00 C 03 00 55.65 +12 46 13.3 U I41
2020-10-15 07:16:58 C 02 59 57.81 +12 37 27.9 V G96
2020-10-15 07:24:20 C 02 59 57.43 +12 37 24.5 V G96
2020-10-15 07:31:41 C 02 59 57.06 +12 37 21.4 V G96
2020-10-15 07:39:02 C 02 59 56.66 +12 37 18.1 V G96
2020-10-15 12:32:08 C 02 59 41.79 +12 35 10.9 V T08
2020-10-15 12:41:24 C 02 59 41.33 +12 35 06.9 V T08
2020-10-15 12:48:50 C 02 59 40.93 +12 35 03.5 V T08
2020-10-15 13:35:12 C 02 59 38.48 +12 34 43.2 V T08
2020-10-17 06:51:25 C 02 57 34.05 +12 16 23.0 V 703
2020-10-17 06:59:01 C 02 57 33.65 +12 16 19.6 V 703
2020-10-17 07:06:37 C 02 57 33.17 +12 16 16.2 V 703
2020-10-17 07:14:14 C 02 57 32.73 +12 16 13.0 V 703
2020-10-18 08:47:41 C 02 56 13.38 +12 04 53.0 U I41
2020-10-18 09:50:51 C 02 56 09.92 +12 04 25.0 U I41
2020-10-19 10:09:38 C 02 54 53.93 +11 53 41.8 V T08
2020-10-19 10:15:49 C 02 54 53.57 +11 53 39.4 V T08
2020-10-19 10:32:26 C 02 54 52.63 +11 53 31.8 V T08
2020-10-19 10:59:06 C 02 54 51.13 +11 53 19.9 V T08
2020-10-20 02:53:48 C 02 54 01.09 +11 46 14.7 V W33
2020-10-20 02:56:40 C 02 54 00.94 +11 46 12.7 V W33
2020-10-20 02:59:31 C 02 54 00.70 +11 46 12.0 V W33
2020-10-20 06:56:40 C 02 53 47.95 +11 44 28.5 V 703
2020-10-20 07:04:14 C 02 53 47.46 +11 44 25.5 V 703
2020-10-20 07:19:23 C 02 53 46.61 +11 44 17.3 V 703
2020-10-20 08:49:47 C 02 53 42.116 +11 43 40.32 U F52