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
2022-03-01 04:52:08 C 05 43 27.88 -05 57 39.0 V 703
2022-03-01 04:59:08 C 05 43 28.01 -05 57 46.2 V 703
2022-03-01 05:06:07 C 05 43 28.12 -05 57 53.4 V 703
2022-03-04 06:09:14 C 05 45 04.48 -07 10 37.9 V T08
2022-03-04 06:13:50 C 05 45 04.61 -07 10 42.7 V T08
2022-03-04 06:22:33 C 05 45 04.80 -07 10 50.4 V T08
2022-03-04 06:39:34 C 05 45 05.16 -07 11 07.2 V T08
2022-03-07 03:50:38 C 05 46 58.89 -08 15 00.8 V 703
2022-03-07 03:58:50 C 05 46 59.12 -08 15 08.3 V 703
2022-03-07 04:07:01 C 05 46 59.33 -08 15 15.9 V 703
2022-03-07 04:15:13 C 05 46 59.56 -08 15 22.6 V 703
2022-03-08 03:23:10 C 05 47 42.38 -08 35 44.6 V G96
2022-03-08 03:35:29 C 05 47 42.74 -08 35 55.3 V G96
2022-03-08 03:42:51 C 05 47 42.95 -08 36 01.7 V G96
2022-03-08 03:50:15 C 05 47 43.16 -08 36 08.1 V G96
2022-03-10 04:11:30 C 05 49 19.51 -09 17 12.8 V 703
2022-03-10 04:19:48 C 05 49 19.77 -09 17 19.6 V 703
2022-03-10 04:28:06 C 05 49 20.06 -09 17 26.5 V 703
2022-03-10 04:36:23 C 05 49 20.31 -09 17 33.1 V 703
2022-03-12 06:10:10 C 05 51 08.85 -09 57 44.6 V T08
2022-03-12 06:14:45 C 05 51 09.00 -09 57 47.8 V T08
2022-03-12 06:22:38 C 05 51 09.30 -09 57 54.6 V T08
2022-03-12 06:37:25 C 05 51 09.80 -09 58 06.6 V T08
2022-03-14 04:41:21 C 05 52 58.66 -10 33 55.4 V 703
2022-03-14 04:49:54 C 05 52 59.04 -10 34 02.5 V 703
2022-03-14 04:58:27 C 05 52 59.31 -10 34 08.1 V 703
2022-03-14 05:07:01 C 05 52 59.70 -10 34 15.1 V 703
2022-03-17 01:38:19 C 05 55 55.781 -11 24 47.70 V W68
2022-03-17 01:42:35 C 05 55 55.968 -11 24 50.94 V W68
2022-03-17 01:51:53 C 05 55 56.378 -11 24 56.95 V W68
2022-03-17 02:10:05 C 05 55 57.118 -11 25 10.06 V W68
2022-03-20 00:42:33 C 05 59 14.890 -12 14 35.38 V W68
2022-03-20 00:48:57 C 05 59 15.221 -12 14 39.55 V W68
2022-03-20 00:59:57 C 05 59 15.732 -12 14 47.62 V W68
2022-03-20 01:18:32 C 05 59 16.546 -12 14 59.64 V W68
2022-03-21 00:15:52 C 06 00 24.485 -12 30 31.64 V W68
2022-03-21 00:20:25 C 06 00 24.677 -12 30 34.52 V W68
2022-03-21 00:29:01 C 06 00 25.094 -12 30 40.36 V W68
2022-03-21 00:49:15 C 06 00 26.040 -12 30 53.60 V W68
2022-03-24 01:02:37 C 06 04 09.821 -13 18 09.07 V W68
2022-03-24 01:29:25 C 06 04 11.213 -13 18 25.45 V W68
2022-03-24 01:41:39 C 06 04 11.830 -13 18 33.62 V W68
2022-03-24 01:56:09 C 06 04 12.576 -13 18 42.37 V W68
2022-03-28 02:59:18 C 06 09 38.04 -14 19 01.8 V 703
2022-03-28 03:04:33 C 06 09 38.37 -14 19 05.0 V 703
2022-03-28 03:09:48 C 06 09 38.67 -14 19 07.6 V 703
2022-03-28 03:15:03 C 06 09 38.92 -14 19 10.8 V 703
2022-04-25 00:19:09 C 06 58 24.103 -20 18 30.28 V W68
2022-04-25 00:23:14 C 06 58 24.430 -20 18 32.18 V W68
2022-04-25 00:30:43 C 06 58 25.051 -20 18 35.86 V W68