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
2018-09-09 09:05:13 C 18 56 31.81 +01 00 00.2 U T05
2018-09-12 03:29:19 C 18 56 40.63 +01 10 42.1 U I41
2018-09-12 03:29:19 C 18 56 40.63 +01 10 42.1 U I41
2018-09-12 04:34:21 C 18 56 40.81 +01 10 52.4 U I41
2018-09-12 04:34:21 C 18 56 40.81 +01 10 52.4 U I41
2018-09-14 03:47:59 C 18 56 57.82 +01 17 53.6 U I41
2018-09-14 05:04:11 C 18 56 58.28 +01 18 04.4 U I41
2019-09-17 11:53:06 C 08 18 41.11 +34 41 16.8 V G96
2019-09-17 12:00:18 C 08 18 41.91 +34 41 12.2 V G96
2019-09-17 12:07:30 C 08 18 42.67 +34 41 06.9 V G96
2019-09-17 12:14:43 C 08 18 43.46 +34 41 01.9 V G96
2019-09-28 11:17:21 C 08 45 48.10 +31 13 53.7 V 703
2019-09-28 11:40:21 C 08 45 50.48 +31 13 35.3 V 703
2019-10-08 14:41:26 C 09 09 20.391 +27 33 18.70 U F51
2019-10-08 14:48:47 C 09 09 21.078 +27 33 11.68 U F51
2019-10-08 14:56:11 C 09 09 21.761 +27 33 04.56 U F51
2019-10-08 15:03:33 C 09 09 22.450 +27 32 57.51 U F51
2019-10-25 14:47:35 C 09 45 49.92 +20 13 53.2 V T08
2019-10-25 14:51:36 C 09 45 50.25 +20 13 48.6 V T08
2019-10-25 14:59:40 C 09 45 50.93 +20 13 38.9 V T08
2019-10-25 15:16:55 C 09 45 52.36 +20 13 18.7 V T08
2019-10-26 04:13:14 C 09 46 58.39 +19 57 45.8 V C95
2019-10-26 04:14:59 C 09 46 58.52 +19 57 43.5 V C95
2019-10-26 04:16:42 C 09 46 58.68 +19 57 41.1 V C95
2019-10-26 04:18:26 C 09 46 58.82 +19 57 39.2 V C95
2019-10-26 04:21:54 C 09 46 59.12 +19 57 35.1 V C95
2019-10-31 11:27:51 C 09 57 37.69 +17 19 31.9 V 703
2019-10-31 11:43:03 C 09 57 38.90 +17 19 13.4 V 703
2019-10-31 11:50:39 C 09 57 39.57 +17 19 02.0 V 703
2019-11-02 13:33:22 C 10 01 44.35 +16 14 20.4 V T08
2019-11-02 13:42:24 C 10 01 45.13 +16 14 09.5 V T08
2019-11-02 13:47:04 C 10 01 45.49 +16 14 01.9 V T08
2019-11-02 14:07:47 C 10 01 47.12 +16 13 34.6 V T08
2019-11-03 11:45:41 C 10 03 32.68 +15 44 51.7 V 703
2019-11-03 11:51:33 C 10 03 33.09 +15 44 43.3 V 703
2019-11-03 11:57:26 C 10 03 33.59 +15 44 36.1 V 703
2019-11-03 12:03:18 C 10 03 34.13 +15 44 27.5 V 703
2019-11-08 11:25:43 C 10 13 08.33 +13 00 00.6 V 703
2019-11-08 11:38:36 C 10 13 09.28 +12 59 42.6 V 703
2019-11-08 11:45:03 C 10 13 09.70 +12 59 33.4 V 703
2019-11-10 13:38:18 C 10 17 05.63 +11 47 41.5 V T08
2019-11-10 13:57:03 C 10 17 07.05 +11 47 15.0 V T08
2019-11-10 14:11:12 C 10 17 08.15 +11 46 54.1 V T08
2019-11-10 15:35:19 C 10 17 14.61 +11 44 51.1 V T08
2019-11-14 14:36:10 C 10 24 37.08 +09 22 26.8 V T08
2019-11-14 14:40:30 C 10 24 37.38 +09 22 21.4 V T08
2019-11-14 14:49:28 C 10 24 38.05 +09 22 07.1 V T08
2019-11-14 15:05:57 C 10 24 39.30 +09 21 41.0 V T08
2019-11-23 11:09:43 C 10 40 38.73 +03 36 34.7 V 703
2019-11-23 11:17:28 C 10 40 39.22 +03 36 20.5 V 703