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
2018-08-15 21:17:18 C 19 10 26.00 -01 46 16.3 q 160
2018-08-17 05:03:47 C 19 08 53.53 -01 32 45.2 U I41
2018-08-17 05:06:25 C 19 08 53.41 -01 32 43.9 U I41
2018-08-17 05:11:04 C 19 08 53.18 -01 32 42.0 U I41
2018-08-17 05:22:18 C 19 08 52.64 -01 32 37.4 U I41
2018-08-17 05:26:56 C 19 08 52.41 -01 32 35.4 U I41
2018-08-17 05:40:48 C 19 08 51.73 -01 32 29.8 U I41
2018-08-17 06:25:48 C 19 08 49.53 -01 32 11.1 U I41
2018-08-17 06:31:45 C 19 08 49.23 -01 32 08.6 U I41
2018-08-17 06:33:44 C 19 08 49.15 -01 32 07.8 U I41
2018-08-17 06:34:23 C 19 08 49.11 -01 32 07.5 U I41
2018-08-17 06:37:02 C 19 08 48.98 -01 32 06.3 U I41
2018-08-17 06:39:02 C 19 08 48.89 -01 32 05.5 U I41
2018-08-17 06:41:40 C 19 08 48.75 -01 32 04.5 U I41
2018-08-17 06:42:20 C 19 08 48.72 -01 32 04.3 U I41
2018-08-17 06:44:19 C 19 08 48.62 -01 32 03.4 U I41
2018-08-17 06:46:56 C 19 08 48.50 -01 32 02.4 U I41
2018-08-17 06:47:37 C 19 08 48.47 -01 32 02.0 U I41
2018-08-17 06:50:16 C 19 08 48.33 -01 32 01.0 U I41
2018-08-17 06:54:53 C 19 08 48.10 -01 31 59.0 U I41
2018-08-17 06:57:33 C 19 08 47.98 -01 31 57.9 U I41
2018-08-17 07:02:49 C 19 08 47.72 -01 31 55.7 U I41
2018-08-17 07:05:27 C 19 08 47.60 -01 31 54.6 U I41
2018-08-17 07:06:08 C 19 08 47.57 -01 31 54.3 U I41
2018-08-17 07:18:41 C 19 08 46.95 -01 31 49.1 U I41
2018-08-17 07:24:37 C 19 08 46.66 -01 31 46.7 U I41
2018-08-17 07:26:37 C 19 08 46.56 -01 31 45.9 U I41
2018-08-17 07:31:54 C 19 08 46.31 -01 31 43.8 U I41
2018-08-17 07:34:33 C 19 08 46.18 -01 31 42.5 U I41
2018-08-17 07:37:50 C 19 08 46.02 -01 31 41.3 U I41
2018-08-17 07:43:08 C 19 08 45.77 -01 31 39.1 U I41
2018-08-17 07:45:08 C 19 08 45.67 -01 31 38.3 U I41
2018-08-17 07:47:46 C 19 08 45.54 -01 31 37.1 U I41
2018-08-17 07:50:25 C 19 08 45.41 -01 31 36.0 U I41
2018-08-17 07:56:23 C 19 08 45.13 -01 31 33.6 U I41
2018-08-17 21:43:15 C 19 08 07.28 -01 25 56.4 q 160
2018-08-17 21:47:05 C 19 08 07.11 -01 25 55.0 q 160
2018-08-17 21:50:56 C 19 08 06.93 -01 25 53.6 q 160
2018-08-18 21:07:10 C 19 07 05.23 -01 16 39.1 q 160
2018-08-18 21:10:56 C 19 07 05.07 -01 16 37.1 q 160
2018-08-18 21:14:46 C 19 07 04.98 -01 16 36.0 q 160
2018-09-06 04:00:59 C 18 56 45.35 +00 46 05.4 U I41
2018-09-06 06:00:38 C 18 56 44.48 +00 46 28.4 U I41
2018-09-07 04:02:01 C 18 56 38.44 +00 50 35.9 U I41
2018-09-07 05:31:43 C 18 56 37.96 +00 50 52.6 U I41
2018-09-09 04:02:41 C 18 56 32.14 +00 59 07.1 U I41
2018-09-09 04:31:31 C 18 56 32.08 +00 59 12.0 U I41
2018-09-09 08:20:46 C 18 56 31.89 +00 59 52.2 U T05
2018-09-09 08:35:43 C 18 56 31.86 +00 59 55.1 U T05
2018-09-09 08:50:10 C 18 56 31.85 +00 59 57.2 U T05