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
1984-08-27 08:21:00 A 00 27 31.48 -14 11 16.3 15.0 675
1984-08-27 09:17:59 A 00 27 31.36 -14 13 17.8 675
1984-08-29 08:42:00 A 00 27 26.21 -16 04 08.8 675
1984-08-29 09:40:59 A 00 27 25.59 -16 06 41.1 675
1984-08-30 09:53:29 A 00 27 17.45 -17 11 18.3 675
1984-08-30 10:22:29 A 00 27 17.22 -17 12 40.3 675
2007-11-02 01:43:09 C 20 13 55.09 -19 21 54.3 r G96
2007-11-02 01:51:09 C 20 13 55.20 -19 21 53.8 r G96
2007-11-02 01:59:00 C 20 13 55.30 -19 21 54.1 r G96
2007-11-02 02:07:02 C 20 13 55.41 -19 21 54.7 r G96
2007-11-03 02:00:31 C 20 14 14.92 -19 22 12.5 r G96
2007-11-03 02:08:52 C 20 14 15.07 -19 22 12.3 r G96
2007-11-03 02:17:21 C 20 14 15.18 -19 22 12.4 r G96
2007-11-03 02:25:44 C 20 14 15.28 -19 22 12.2 r G96
2007-11-05 02:05:03 C 20 14 57.94 -19 22 34.1 20.7 r G96
2007-11-05 02:18:10 C 20 14 58.16 -19 22 34.3 20.5 r G96
2007-11-05 02:28:19 C 20 14 58.30 -19 22 34.3 20.2 r G96
2007-11-05 02:46:34 C 20 14 58.56 -19 22 33.8 20.5 r G96
2011-07-02 10:31:43 C 21 49 32.30 -10 28 49.6 r G96
2011-07-02 10:39:18 C 21 49 32.12 -10 28 50.9 r G96
2011-07-02 10:46:50 C 21 49 31.90 -10 28 51.7 r G96
2011-07-02 10:54:22 C 21 49 31.76 -10 28 52.0 r G96
2011-07-03 05:01:57 C 21 49 06.01 -10 31 20.3 o 807
2011-07-03 05:27:01 C 21 49 05.42 -10 31 23.7 o 807
2011-07-03 05:51:55 C 21 49 04.78 -10 31 27.2 o 807
2011-07-03 09:33:08 C 21 48 59.18 -10 32 01.1 r G96
2011-07-03 09:41:11 C 21 48 59.16 -10 32 02.1 r G96
2011-07-03 09:49:14 C 21 48 58.98 -10 32 03.5 r G96
2011-07-03 09:57:16 C 21 48 58.77 -10 32 04.6 r G96
2011-07-04 16:36:34 C 21 48 13.10 -10 36 29.2 c D35
2011-07-04 16:40:01 C 21 48 13.00 -10 36 30.1 c D35
2011-07-04 16:43:31 C 21 48 12.91 -10 36 30.5 c D35
2011-07-04 16:47:03 C 21 48 12.81 -10 36 31.0 c D35
2011-07-05 07:34:11 C 21 47 49.92 -10 38 44.9 r H21
2011-07-05 07:47:58 C 21 47 49.53 -10 38 46.9 r H21
2011-07-05 07:50:39 C 21 47 49.47 -10 38 47.4 r H21
2011-07-05 08:06:39 C 21 47 49.05 -10 38 50.2 r H21
2011-07-07 06:40:40 C 21 46 33.87 -10 46 05.7 r H21
2011-07-07 07:03:51 C 21 46 33.17 -10 46 09.0 r H21
2011-07-07 07:22:55 C 21 46 32.63 -10 46 12.4 r H21
2011-08-29 12:15:59 C 20 48 53.86 -16 05 36.3 o 474
2011-08-29 12:18:59 C 20 48 53.68 -16 05 37.0 o 474
2011-08-29 12:21:29 C 20 48 53.51 -16 05 37.6 o 474
2011-08-29 21:46:13 C 20 48 25.57 -16 08 11.3 t 204
2011-08-29 22:14:48 C 20 48 24.09 -16 08 18.6 t 204
2011-09-24 04:05:11 C 20 23 56.18 -18 20 39.2 r G96
2011-09-24 04:12:42 C 20 23 55.96 -18 20 40.3 r G96
2011-09-24 04:20:15 C 20 23 55.71 -18 20 41.8 r G96
2011-09-24 04:27:44 C 20 23 55.50 -18 20 43.3 r G96
2012-06-12 03:43:03 C 09 41 19.60 +41 07 16.1 r 703