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
2020-11-16 07:43:02 C 02 21 58.735 +07 52 31.04 U F52
2020-11-16 07:58:55 C 02 21 58.128 +07 52 27.31 U F52
2020-11-17 09:30:02 C 02 21 03.488 +07 46 48.17 U F51
2020-11-17 09:48:23 C 02 21 02.798 +07 46 44.15 U F51
2020-11-17 10:06:47 C 02 21 02.120 +07 46 40.14 U F51
2020-11-17 10:25:09 C 02 21 01.439 +07 46 36.29 U F51
2020-12-12 07:19:12 C 02 11 27.298 +07 01 45.38 U F52
2020-12-12 07:37:00 C 02 11 27.306 +07 01 46.11 U F52
2020-12-12 07:54:47 C 02 11 27.321 +07 01 47.08 U F52
2020-12-12 08:12:27 C 02 11 27.314 +07 01 47.87 U F52
2021-01-06 08:01:05 C 02 21 34.543 +08 23 37.50 U F51
2021-01-06 08:19:52 C 02 21 35.075 +08 23 41.35 U F51
2021-01-06 08:38:31 C 02 21 35.600 +08 23 45.03 U F51
2021-01-06 08:57:08 C 02 21 36.125 +08 23 48.83 U F51
2023-05-01 00:53:22 C 18 22 36.598 -14 02 03.98 V M22
2023-05-01 01:00:59 C 18 22 37.224 -14 01 59.88 V M22
2023-05-01 01:05:38 C 18 22 37.721 -14 01 57.32 V M22
2023-05-01 01:14:49 C 18 22 38.494 -14 01 52.50 V M22
2023-06-04 00:39:52 C 19 38 09.25 -03 57 51.6 X C95
2023-06-04 00:52:27 C 19 38 10.40 -03 57 40.4 X C95
2023-06-12 00:10:27 C 19 55 57.65 -00 57 13.6 V G33
2023-06-12 00:17:04 C 19 55 58.19 -00 57 07.4 V G33
2023-06-13 05:16:24 C 19 58 39.780 -00 28 48.83 V W68
2023-06-13 05:25:35 C 19 58 40.579 -00 28 40.22 V W68
2023-06-13 06:05:28 C 19 58 44.047 -00 28 02.32 V W68
2023-06-17 11:59:07 C 20 08 09.485 +01 09 00.24 X F51
2023-06-17 12:15:41 C 20 08 10.896 +01 09 16.03 X F51
2023-06-17 12:32:34 C 20 08 12.331 +01 09 32.07 X F51
2023-06-17 12:48:45 C 20 08 13.714 +01 09 47.49 X F51
2023-06-21 06:26:21 C 20 16 29.62 +02 33 58.2 q 463
2023-06-21 06:36:12 C 20 16 30.44 +02 34 06.8 q 463
2023-06-21 06:46:47 C 20 16 31.39 +02 34 17.5 q 463
2023-06-22 07:22:06 C 20 18 46.11 +02 57 01.7 u H21
2023-06-22 07:26:07 C 20 18 46.45 +02 57 05.7 u H21
2023-06-24 06:54:10 C 20 23 07.818 +03 40 22.80 V G96
2023-06-24 07:03:34 C 20 23 08.624 +03 40 31.30 V G96
2023-06-24 07:12:59 C 20 23 09.427 +03 40 39.90 V G96
2023-06-24 07:22:23 C 20 23 10.237 +03 40 48.36 V G96
2023-06-25 06:33:58 C 20 25 17.31 +04 01 30.7 q 463
2023-06-25 06:41:59 C 20 25 18.00 +04 01 37.7 q 463
2023-06-25 06:52:18 C 20 25 18.90 +04 01 47.0 q 463
2023-06-25 11:34:22 C 20 25 44.208 +04 06 06.83 X F51
2023-06-25 11:46:41 C 20 25 45.236 +04 06 17.80 X F51
2023-06-25 11:59:28 C 20 25 46.312 +04 06 29.19 X F51
2023-06-27 17:01:17 C 20 30 35.84 +04 52 40.9 V D29
2023-06-27 17:21:39 C 20 30 37.53 +04 52 57.9 V D29
2023-06-27 17:42:01 C 20 30 39.23 +04 53 16.2 V D29
2023-06-28 00:24:20 C 20 31 16.00 +04 58 55.5 X C95
2023-06-28 00:28:11 C 20 31 16.33 +04 58 58.8 X C95
2023-06-28 00:32:01 C 20 31 16.64 +04 59 01.9 X C95