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
2017-09-28 10:52:53 C 04 51 50.00 +18 14 14.3 o 691
2017-10-22 09:21:48 C 04 45 46.24 +16 20 21.2 U G96
2017-10-22 09:30:49 C 04 45 45.94 +16 20 19.5 U G96
2017-10-22 09:39:58 C 04 45 45.66 +16 20 17.1 U G96
2017-10-22 09:49:01 C 04 45 45.32 +16 20 15.1 U G96
2017-11-15 07:29:49 C 04 18 51.93 +14 03 44.8 U G96
2017-11-15 07:37:14 C 04 18 51.46 +14 03 43.2 U G96
2017-11-15 07:44:36 C 04 18 51.04 +14 03 41.4 U G96
2017-11-15 07:52:01 C 04 18 50.61 +14 03 39.9 U G96
2017-11-18 09:07:10 C 04 14 40.999 +13 47 16.17 L F51
2017-11-18 09:10:53 C 04 14 40.773 +13 47 15.31 L F51
2017-11-18 09:29:38 C 04 14 39.673 +13 47 11.33 L F51
2017-11-18 09:44:41 C 04 14 38.781 +13 47 07.95 L F51
2017-11-18 10:03:27 C 04 14 37.679 +13 47 03.95 L F51
2017-11-18 10:07:14 C 04 14 37.453 +13 47 03.04 L F51
2017-11-19 09:10:17 C 04 13 18.766 +13 42 01.85 L F51
2017-11-19 09:27:41 C 04 13 17.743 +13 41 58.09 L F51
2017-11-19 09:45:00 C 04 13 16.725 +13 41 54.42 L F51
2017-11-19 10:02:21 C 04 13 15.701 +13 41 50.68 L F51
2017-11-23 23:14:13 C 04 07 05.42 +13 19 13.1 19.6 u J43
2017-11-23 23:31:34 C 04 07 04.49 +13 19 09.7 20.5 u J43
2017-11-23 23:48:55 C 04 07 03.46 +13 19 06.2 19.8 u J43
2017-11-24 00:06:12 C 04 07 02.48 +13 19 03.3 19.5 u J43
2017-12-15 03:04:45 C 03 43 09.61 +12 09 42.8 U G96
2017-12-15 03:12:19 C 03 43 09.35 +12 09 42.6 U G96
2017-12-15 03:19:53 C 03 43 09.14 +12 09 41.9 U G96
2017-12-22 09:53:33 C 03 37 54.248 +12 02 07.33 U F51
2017-12-22 10:10:20 C 03 37 53.818 +12 02 07.16 U F51
2017-12-22 10:27:13 C 03 37 53.363 +12 02 06.62 U F51
2017-12-22 10:44:04 C 03 37 52.931 +12 02 06.03 U F51
2020-04-19 11:14:21 C 21 00 22.64 -10 48 17.0 V G96
2020-04-19 11:20:27 C 21 00 23.60 -10 48 12.6 V G96
2020-04-19 11:26:32 C 21 00 24.52 -10 48 07.9 V G96
2020-04-19 11:32:39 C 21 00 25.41 -10 48 02.9 V G96
2020-04-20 14:22:24 C 21 04 31.140 -10 27 28.16 U F51
2020-04-20 14:27:59 C 21 04 31.978 -10 27 23.88 U F51
2020-04-20 14:33:33 C 21 04 32.824 -10 27 19.50 U F51
2020-04-20 14:39:08 C 21 04 33.671 -10 27 15.17 U F51
2020-06-27 13:56:52 C 00 55 11.892 +11 33 33.01 U F52
2020-06-27 14:04:22 C 00 55 12.788 +11 33 37.55 U F52
2020-06-27 14:11:52 C 00 55 13.703 +11 33 41.94 U F52
2020-07-16 01:33:04 C 01 46 06.84 +15 18 05.0 V C95
2020-07-16 02:07:51 C 01 46 10.53 +15 18 19.6 V C95
2020-07-23 10:26:41 C 02 04 11.75 +16 21 51.9 U I41
2020-07-23 11:15:30 C 02 04 16.46 +16 22 07.6 U I41
2020-07-24 10:10:50 C 02 06 30.63 +16 29 16.9 U I41
2020-07-24 11:06:11 C 02 06 35.90 +16 29 34.1 U I41
2020-07-24 14:17:00 C 02 06 54.312 +16 30 34.81 U F52
2020-07-24 14:22:35 C 02 06 54.840 +16 30 36.57 U F52
2020-07-24 14:28:09 C 02 06 55.370 +16 30 38.37 U F52