331471 (1984 QY1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8934455883 ± 2.43e-09
Semi-major axis (a)2.5021720717 AU ± 1.59e-09
Inclination (i)14.28854523° ± 7.92e-07
Long. of Asc. Node (Ω)142.23451213° ± 6.39e-07
Arg. of Perihelion (ω)337.19568641° ± 6.35e-07
Mean Anomaly (M)152.86848087° ± 8.80e-07
Mean Motion (n)0.2490213124°/day ± 2.37e-10
Perihelion dist (q)0.26661747 AU ± 6.09e-09
Aphelion dist (Q)4.73772667 AU ± 6.79e-09
Orbital Period3.95799971 yr ± 3.76e-09
Physical Parameters
H (abs. magnitude)15.52
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.032″
Uncertainty0
Orbit TypeApollo
MOID0.136296 AU
Observations Used2124
Gaia Obs Used139
Oppositions24
Arc Total1984-2016
First Observation Used1984-08-27
Last Observation Used2024-08-03
Observations (2531)
Date Type RA Dec Mag Band Observatory
2016-07-08 23:23:32 C 15 15 51.05 +06 36 33.0 16.8 q 583
2016-07-09 07:35:23 C 15 16 14.488 +06 25 20.67 L F51
2016-07-09 08:09:34 C 15 16 16.006 +06 24 33.91 L F51
2016-07-09 08:26:40 C 15 16 16.767 +06 24 10.34 L F51
2016-07-11 21:13:11 C 15 19 06.11 +05 04 40.7 q 160
2016-07-11 21:15:32 C 15 19 06.22 +05 04 37.7 q 160
2016-07-11 21:17:54 C 15 19 06.31 +05 04 34.8 q 160
2016-07-17 21:35:42 C 15 25 37.24 +02 21 09.8 q 160
2016-07-17 21:37:17 C 15 25 37.27 +02 21 07.7 q 160
2016-07-17 21:39:08 C 15 25 37.32 +02 21 06.1 q 160
2016-07-19 20:57:56 C 15 27 43.58 +01 33 51.9 q 160
2016-07-19 21:00:53 C 15 27 43.73 +01 33 49.4 q 160
2016-07-19 21:03:50 C 15 27 43.83 +01 33 46.8 q 160
2016-07-20 20:57:20 C 15 28 47.38 +01 10 55.9 q 160
2016-07-20 21:00:07 C 15 28 47.51 +01 10 53.4 q 160
2016-07-20 21:02:55 C 15 28 47.63 +01 10 50.9 q 160
2016-07-22 06:16:54 C 15 30 16.00 +00 40 11.1 L T05
2016-07-22 06:34:37 C 15 30 16.75 +00 39 55.3 L T05
2016-07-22 07:13:30 C 15 30 18.37 +00 39 19.5 L T05
2016-07-22 07:32:57 C 15 30 19.24 +00 39 02.7 L T05
2016-07-31 20:07:52 S 15 40 26.522 -02 24 17.24 L C51
2016-07-31 21:42:07 S 15 40 30.758 -02 25 23.63 L C51
2016-07-31 23:16:33 S 15 40 34.951 -02 26 29.15 L C51
2016-08-01 19:42:54 S 15 41 29.702 -02 40 53.36 L C51
2018-06-15 12:30:23 C 20 47 12.999 -11 39 36.50 U F51
2018-06-15 12:44:27 C 20 47 12.678 -11 39 37.44 U F51
2018-06-15 12:58:28 C 20 47 12.381 -11 39 38.73 U F51
2018-06-15 13:12:31 C 20 47 12.066 -11 39 39.23 U F51
2018-07-08 11:21:32 C 20 31 45.851 -12 31 28.95 U F51
2018-07-08 11:55:11 C 20 31 44.712 -12 31 33.59 U F51
2018-07-08 12:12:00 C 20 31 44.109 -12 31 35.46 U F51
2018-07-12 06:46:33 C 20 28 37.89 -12 43 02.9 u H21
2018-07-12 07:00:04 C 20 28 37.39 -12 43 05.1 u H21
2018-07-12 07:14:33 C 20 28 36.89 -12 43 06.9 u H21
2018-08-02 03:50:39 C 20 10 13.93 -13 55 12.4 u H21
2018-08-02 04:09:26 C 20 10 13.23 -13 55 15.2 u H21
2018-08-02 04:24:38 C 20 10 12.69 -13 55 17.8 u H21
2018-08-11 09:34:58 C 20 02 12.594 -14 28 52.88 U F51
2018-08-11 09:51:52 C 20 02 11.984 -14 28 55.30 U F51
2018-08-11 10:08:45 C 20 02 11.392 -14 28 57.80 U F51
2018-08-11 10:25:36 C 20 02 10.775 -14 29 00.38 U F51
2019-07-01 13:21:29 C 22 04 19.888 -09 50 34.04 U F51
2019-07-01 13:37:17 C 22 04 19.567 -09 50 36.11 U F51
2019-07-01 13:53:06 C 22 04 19.243 -09 50 38.15 U F51
2019-07-01 14:08:58 C 22 04 18.917 -09 50 40.22 U F51
2019-07-03 08:54:19 C 22 03 26.61 -09 56 31.2 V G96
2019-07-03 09:01:46 C 22 03 26.51 -09 56 31.8 V G96
2019-07-03 09:09:12 C 22 03 26.25 -09 56 32.7 V G96
2019-07-03 09:16:39 C 22 03 25.97 -09 56 34.4 V G96
2019-07-10 12:29:22 C 21 59 10.028 -10 24 29.48 U F51