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
2019-11-23 11:32:59 C 10 40 40.37 +03 35 52.8 V 703
2019-11-24 11:07:53 C 10 42 24.70 +02 55 03.6 V 703
2019-11-24 11:15:32 C 10 42 25.32 +02 54 51.0 V 703
2019-11-24 11:23:12 C 10 42 25.82 +02 54 36.9 V 703
2019-11-24 11:30:51 C 10 42 26.49 +02 54 24.0 V 703
2019-11-25 14:41:36 C 10 44 26.20 +02 06 44.1 V T08
2019-11-25 14:46:20 C 10 44 26.53 +02 06 35.8 V T08
2019-11-25 14:53:42 C 10 44 27.07 +02 06 22.7 V T08
2019-11-25 15:09:47 C 10 44 28.21 +02 05 54.6 V T08
2019-11-27 15:13:14 C 10 47 58.58 +00 39 52.7 V T05
2019-11-27 15:17:53 C 10 47 58.86 +00 39 45.3 V T05
2019-11-27 15:28:28 C 10 47 59.66 +00 39 25.4 V T05
2019-11-27 15:35:58 C 10 48 00.17 +00 39 13.0 V T05
2019-11-29 15:02:33 C 10 51 26.27 -00 47 50.5 V T08
2019-11-29 15:06:45 C 10 51 26.59 -00 47 58.8 V T08
2019-11-29 15:14:34 C 10 51 27.16 -00 48 13.2 V T08
2019-11-29 15:29:26 C 10 51 28.16 -00 48 41.0 V T08
2019-12-06 00:04:33 C 11 02 20.81 -05 43 02.2 o K95
2019-12-06 00:33:58 C 11 02 22.83 -05 44 03.0 o K95
2019-12-06 10:55:24 C 11 03 06.37 -06 05 00.0 V 703
2019-12-06 11:02:35 C 11 03 06.89 -06 05 14.2 V 703
2019-12-06 11:09:46 C 11 03 07.39 -06 05 29.0 V 703
2019-12-06 11:16:57 C 11 03 07.91 -06 05 44.1 V 703
2019-12-07 14:14:54 C 11 05 01.58 -07 00 22.0 V T08
2019-12-07 14:19:08 C 11 05 01.83 -07 00 30.2 V T08
2019-12-07 14:27:53 C 11 05 02.48 -07 00 48.5 V T08
2019-12-07 14:42:12 C 11 05 03.44 -07 01 17.3 V T08
2019-12-09 13:50:01 C 11 08 21.23 -08 38 31.1 V T05
2019-12-09 13:54:17 C 11 08 21.55 -08 38 39.5 V T05
2019-12-09 14:03:46 C 11 08 22.17 -08 38 59.2 V T05
2019-12-09 14:19:30 C 11 08 23.24 -08 39 32.7 V T05
2019-12-15 13:05:09 C 11 18 16.14 -13 46 53.0 V T08
2019-12-15 13:10:23 C 11 18 16.44 -13 47 04.5 V T08
2019-12-15 13:18:57 C 11 18 17.06 -13 47 24.4 V T08
2019-12-15 13:34:24 C 11 18 18.08 -13 47 58.1 V T08
2019-12-19 00:25:46 S 11 23 57.902 -16 54 43.85 L C51
2019-12-24 14:01:19 C 11 33 03.17 -22 07 59.6 V T05
2019-12-24 14:04:41 C 11 33 03.36 -22 08 07.6 V T05
2019-12-24 14:12:39 C 11 33 03.88 -22 08 26.8 V T05
2019-12-24 14:51:54 C 11 33 06.43 -22 10 01.2 V T05
2019-12-28 23:05:25 S 11 40 08.16 -26 22 47.9 L C51
2019-12-29 02:13:56 S 11 40 20.83 -26 30 30.7 L C51
2019-12-29 05:22:14 S 11 40 33.54 -26 38 14.2 L C51
2019-12-29 08:30:44 S 11 40 46.248 -26 45 58.82 L C51
2019-12-29 11:38:30 S 11 40 58.874 -26 53 40.27 L C51
2019-12-29 14:47:33 S 11 41 11.686 -27 01 27.26 L C51
2019-12-29 17:55:52 S 11 41 24.34 -27 09 10.4 L C51
2019-12-30 00:12:42 S 11 41 49.71 -27 24 40.7 L C51
2019-12-30 03:20:27 S 11 42 02.35 -27 32 24.9 L C51
2019-12-30 09:38:01 S 11 42 27.770 -27 47 58.16 L C51