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
2007-04-19 03:50:23 C 11 10 15.31 +04 05 47.9 r G96
2007-04-19 04:04:22 C 11 10 14.95 +04 05 52.1 r G96
2007-04-19 04:30:37 C 11 10 14.16 +04 06 00.1 r G96
2007-04-19 04:45:57 C 11 10 13.72 +04 06 05.0 r G96
2010-02-17 06:27:55 C 11 09 43.64 +00 42 25.0 o 691
2010-02-17 06:57:34 C 11 09 42.51 +00 42 32.5 o 691
2013-03-04 07:18:27 C 10 03 01.149 +06 39 33.48 L F51
2013-03-04 07:38:56 C 10 03 00.231 +06 39 39.79 L F51
2013-03-04 07:59:27 C 10 02 59.301 +06 39 46.07 L F51
2013-03-04 08:19:57 C 10 02 58.381 +06 39 52.55 L F51
2014-11-26 09:28:14 C 05 24 45.754 +15 21 00.11 L F51
2014-11-26 09:47:01 C 05 24 44.732 +15 20 57.95 L F51
2014-11-26 10:05:45 C 05 24 43.722 +15 20 55.98 L F51
2014-11-26 10:24:23 C 05 24 42.704 +15 20 53.70 L F51
2014-11-28 12:46:38 C 05 22 01.765 +15 15 06.92 L F51
2014-11-28 13:07:08 C 05 22 00.602 +15 15 04.34 L F51
2014-11-28 13:47:55 C 05 21 58.347 +15 14 59.67 L F51
2014-12-12 11:37:24 C 05 03 48.673 +14 43 25.96 L F51
2014-12-12 11:57:02 C 05 03 47.589 +14 43 24.72 L F51
2014-12-12 12:15:52 C 05 03 46.575 +14 43 23.38 L F51
2014-12-12 12:34:38 C 05 03 45.546 +14 43 21.74 L F51
2015-01-14 05:23:53 C 04 34 00.188 +14 34 09.31 L F51
2015-01-14 05:28:38 C 04 34 00.107 +14 34 09.47 L F51
2015-01-14 05:40:24 C 04 33 59.855 +14 34 10.19 L F51
2015-01-14 05:45:11 C 04 33 59.767 +14 34 10.58 L F51
2015-01-14 05:57:01 C 04 33 59.522 +14 34 11.12 L F51
2015-01-14 06:01:47 C 04 33 59.458 +14 34 11.19 L F51
2015-01-14 06:13:45 C 04 33 59.204 +14 34 11.96 L F51
2015-01-14 06:18:31 C 04 33 59.133 +14 34 12.30 L F51
2016-01-14 14:31:19 C 10 06 51.842 +05 20 05.14 L F51
2016-01-14 14:47:26 C 10 06 51.409 +05 20 06.99 L F51
2016-01-14 15:03:42 C 10 06 50.954 +05 20 08.50 L F51
2016-01-14 15:19:49 C 10 06 50.552 +05 20 10.32 L F51
2016-02-05 10:43:53 C 09 48 27.412 +06 51 08.13 L F51
2016-02-05 11:21:02 C 09 48 25.798 +06 51 16.90 L F51
2016-02-05 11:39:35 C 09 48 24.989 +06 51 21.22 L F51
2016-02-06 10:24:31 C 09 47 26.708 +06 56 42.82 L F51
2016-02-06 10:41:39 C 09 47 25.931 +06 56 47.03 L F51
2016-02-06 10:58:49 C 09 47 25.169 +06 56 51.00 L F51
2016-02-06 11:16:03 C 09 47 24.419 +06 56 55.02 L F51
2016-02-28 07:36:20 C 09 24 24.539 +09 14 59.57 L F51
2016-02-28 07:52:29 C 09 24 23.829 +09 15 04.05 L F51
2016-02-28 08:08:38 C 09 24 23.148 +09 15 08.58 L F51
2016-02-28 08:24:50 C 09 24 22.462 +09 15 12.85 L F51
2017-08-05 14:22:31 C 03 47 48.258 +19 00 12.70 L F51
2017-08-05 14:28:26 C 03 47 48.733 +19 00 13.40 L F51
2017-08-05 14:34:20 C 03 47 49.201 +19 00 14.27 L F51
2017-08-05 14:40:16 C 03 47 49.666 +19 00 14.99 L F51
2017-09-28 10:21:54 C 04 51 49.72 +18 14 19.4 o 691
2017-09-28 10:37:18 C 04 51 49.84 +18 14 16.6 o 691