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
2011-02-25 04:22:44 C 04 52 45.15 +14 56 28.4 18.3 c 704
2011-02-25 04:40:15 C 04 52 46.10 +14 56 06.7 18.5 c 704
2011-02-25 04:57:50 C 04 52 47.00 +14 55 45.4 18.6 c 704
2011-03-02 02:32:22 C 04 59 34.36 +12 37 30.3 18.6 c 704
2011-03-02 02:49:58 C 04 59 35.35 +12 37 09.6 18.6 c 704
2011-03-02 03:07:38 C 04 59 36.39 +12 36 50.5 18.7 c 704
2011-03-08 03:59:55 C 05 08 39.91 +10 02 32.2 r 703
2011-03-08 04:10:36 C 05 08 40.63 +10 02 21.3 r 703
2011-03-08 04:32:12 C 05 08 42.00 +10 01 57.7 r 703
2011-03-08 19:24:35 C 05 09 40.34 +09 47 00.2 u 160
2011-03-08 19:27:32 C 05 09 40.53 +09 46 57.3 u 160
2011-03-08 19:30:16 C 05 09 40.70 +09 46 54.7 u 160
2011-03-08 20:01:01 C 05 09 42.68 +09 46 24.2 u 160
2011-03-08 20:03:48 C 05 09 42.85 +09 46 21.0 u 160
2011-03-08 20:06:46 C 05 09 43.06 +09 46 17.9 u 160
2011-03-09 19:55:12 C 05 11 17.10 +09 22 41.6 u 160
2011-03-09 19:57:56 C 05 11 17.29 +09 22 38.4 u 160
2011-03-09 20:00:50 C 05 11 17.45 +09 22 35.4 u 160
2011-03-10 20:11:51 C 05 12 54.01 +08 58 59.8 u 160
2011-03-10 20:15:51 C 05 12 54.29 +08 58 56.7 u 160
2011-03-10 20:19:51 C 05 12 54.56 +08 58 53.1 u 160
2011-03-25 19:19:46 C 05 38 38.83 +03 45 43.4 c A24
2011-03-25 19:20:48 C 05 38 38.88 +03 45 42.9 c A24
2011-03-25 19:36:34 C 05 38 40.08 +03 45 30.2 c A24
2011-03-25 20:10:13 C 05 38 42.60 +03 45 03.8 c A24
2011-03-25 20:25:59 C 05 38 43.72 +03 44 49.9 c A24
2011-03-25 20:27:01 C 05 38 43.86 +03 44 50.4 c A24
2011-03-29 02:46:57 C 05 44 45.66 +02 43 50.0 18.7 c 704
2011-03-29 03:04:37 C 05 44 47.05 +02 43 36.2 18.9 c 704
2011-03-29 03:22:43 C 05 44 48.38 +02 43 22.3 18.7 c 704
2011-03-29 03:40:26 C 05 44 49.70 +02 43 08.8 19.0 c 704
2011-03-29 03:58:42 C 05 44 51.13 +02 42 55.3 18.9 c 704
2011-03-30 19:24:23 C 05 47 56.56 +02 12 55.8 c A24
2011-03-30 19:40:39 C 05 47 57.77 +02 12 43.6 c A24
2011-03-30 19:46:24 C 05 47 58.24 +02 12 39.3 c A24
2011-03-30 19:50:37 C 05 47 58.55 +02 12 35.9 c A24
2011-03-30 20:04:14 C 05 47 59.64 +02 12 25.3 c A24
2011-03-31 19:20:12 C 05 49 50.04 +01 54 56.2 c A24
2011-03-31 19:21:14 C 05 49 50.14 +01 54 55.7 c A24
2011-03-31 19:22:16 C 05 49 50.21 +01 54 55.2 c A24
2011-06-27 08:36:55 C 09 31 00.90 -21 53 43.4 r E12
2012-10-20 19:21:04 C 23 30 38.83 +71 21 51.3 c A24
2012-10-20 19:23:08 C 23 30 38.57 +71 21 50.2 c A24
2012-10-20 19:45:43 C 23 30 35.97 +71 21 41.7 c A24
2012-10-20 20:07:04 C 23 30 33.54 +71 21 34.1 c A24
2012-10-20 20:29:18 C 23 30 31.03 +71 21 25.7 c A24
2012-10-21 18:19:18 C 23 28 08.86 +71 12 46.0 c A24
2012-10-21 18:40:12 C 23 28 06.61 +71 12 37.2 c A24
2012-10-21 19:04:23 C 23 28 04.09 +71 12 28.7 c A24
2012-10-23 18:41:24 C 23 23 12.76 +70 51 42.6 c A24