18882 (1999 YN4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2321218724 ± 9.10e-09
Semi-major axis (a)1.6850068777 AU ± 1.15e-09
Inclination (i)36.81465272° ± 5.29e-07
Long. of Asc. Node (Ω)291.66685521° ± 7.61e-07
Arg. of Perihelion (ω)242.66795075° ± 2.19e-06
Mean Anomaly (M)230.13214226° ± 2.27e-06
Mean Motion (n)0.4506192696°/day ± 4.60e-10
Perihelion dist (q)1.29387993 AU ± 1.54e-08
Aphelion dist (Q)2.07613383 AU ± 1.54e-08
Orbital Period2.18727061 yr ± 2.23e-09
Physical Parameters
H (abs. magnitude)16.14
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.067″
Uncertainty0
Orbit TypeAmor
MOID0.430698 AU
Observations Used2638
Gaia Obs Used122
Oppositions34
Arc Total1954-2025
First Observation Used1954-01-04
Last Observation Used2025-12-18
Observations (4085)
Date Type RA Dec Mag Band Observatory
2023-11-12 08:36:55 C 00 42 56.717 +74 53 09.13 V T05
2023-11-12 08:41:29 C 00 42 56.501 +74 53 07.37 V T05
2023-11-12 08:49:22 C 00 42 55.718 +74 53 01.43 V T05
2023-11-12 09:05:43 C 00 42 53.923 +74 52 51.31 V T05
2023-11-18 08:44:06 C 00 31 27.190 +73 07 11.17 V T05
2023-11-18 08:48:40 C 00 31 26.839 +73 07 07.57 V T05
2023-11-18 08:58:27 C 00 31 26.302 +73 07 00.34 V T05
2023-11-18 09:14:09 C 00 31 25.176 +73 06 46.22 V T05
2023-11-22 08:18:59 C 00 27 06.605 +71 44 45.13 V T05
2023-11-22 08:23:33 C 00 27 06.341 +71 44 40.20 V T05
2023-11-22 08:32:55 C 00 27 06.110 +71 44 30.95 V T05
2023-11-22 08:47:41 C 00 27 05.484 +71 44 18.10 V T05
2023-11-23 07:10:58 C 00 26 26.160 +71 23 45.35 V T08
2023-11-23 07:14:58 C 00 26 25.987 +71 23 42.07 V T08
2023-11-23 07:25:24 C 00 26 25.687 +71 23 32.46 V T08
2023-11-23 08:19:00 C 00 26 23.923 +71 22 41.81 V T08
2023-11-24 08:13:03 C 00 25 49.560 +71 00 15.88 V T05
2023-11-24 08:26:53 C 00 25 49.303 +71 00 03.64 V T05
2023-11-24 08:31:28 C 00 25 49.272 +70 59 59.46 V T05
2023-11-24 08:40:24 C 00 25 48.917 +70 59 50.57 V T05
2023-11-24 08:43:09 C 00 25 48.886 +70 59 48.19 V T05
2023-11-24 08:55:10 C 00 25 48.607 +70 59 36.74 V T05
2023-12-04 07:35:25 C 00 26 53.261 +66 52 48.36 V T05
2023-12-04 07:40:12 C 00 26 53.357 +66 52 42.74 V T05
2023-12-04 07:54:56 C 00 26 53.698 +66 52 26.72 V T05
2023-12-04 08:02:58 C 00 26 53.926 +66 52 17.51 V T05
2023-12-06 06:55:08 C 00 28 19.675 +65 59 49.38 V T05
2023-12-06 06:59:50 C 00 28 19.663 +65 59 43.22 V T05
2023-12-06 07:10:24 C 00 28 19.865 +65 59 32.03 V T05
2023-12-06 07:28:24 C 00 28 20.482 +65 59 11.29 V T05
2023-12-06 07:31:01 C 00 28 20.544 +65 59 07.44 V T05
2023-12-06 07:36:15 C 00 28 20.664 +65 59 01.68 V T05
2023-12-06 07:45:27 C 00 28 21.144 +65 58 51.74 V T05
2023-12-06 08:00:11 C 00 28 21.658 +65 58 34.28 V T05
2023-12-07 06:12:51 C 00 29 09.478 +65 33 20.41 V T08
2023-12-07 06:17:57 C 00 29 09.658 +65 33 14.72 V T08
2023-12-07 06:46:41 C 00 29 10.505 +65 32 41.78 V T08
2023-12-07 06:50:40 C 00 29 10.733 +65 32 37.28 V T08
2023-12-07 06:58:50 C 00 29 10.906 +65 32 27.89 V T08
2023-12-07 07:12:58 C 00 29 11.395 +65 32 11.26 V T08
2023-12-08 07:37:28 C 00 30 08.558 +65 04 10.60 V T05
2023-12-08 07:42:53 C 00 30 08.801 +65 04 04.44 V T05
2023-12-08 07:52:16 C 00 30 09.048 +65 03 53.17 V T05
2023-12-08 08:06:50 C 00 30 09.684 +65 03 36.14 V T05
2023-12-08 08:15:34 C 00 30 10.126 +65 03 26.96 V T05
2023-12-08 08:20:07 C 00 30 10.205 +65 03 19.76 V T05
2023-12-11 07:42:56 C 00 33 25.099 +63 40 04.80 V T08
2023-12-11 07:50:08 C 00 33 25.589 +63 39 55.91 V T08
2023-12-11 07:57:54 C 00 33 25.889 +63 39 46.62 V T08
2023-12-11 08:14:41 C 00 33 26.743 +63 39 26.68 V T08