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
2021-11-12 14:14:44 C 08 42 00.33 +53 26 01.6 V T08
2021-11-12 14:26:04 C 08 42 00.61 +53 25 59.1 V T08
2021-11-12 14:28:43 C 08 42 00.77 +53 25 58.9 V T08
2021-11-12 14:42:53 C 08 42 01.10 +53 25 56.1 V T08
2021-11-12 14:54:44 C 08 42 01.49 +53 25 53.1 V T08
2021-11-12 15:10:16 C 08 42 01.87 +53 25 49.7 V T08
2021-11-14 07:26:28 C 08 43 17.28 +53 17 09.5 U I41
2021-11-14 07:56:59 C 08 43 18.13 +53 17 03.7 U I41
2021-11-14 08:55:51 C 08 43 19.73 +53 16 52.4 U I41
2021-11-14 09:25:05 C 08 43 20.49 +53 16 46.7 U I41
2021-11-14 09:52:07 C 08 43 21.20 +53 16 41.4 U I41
2021-11-14 10:52:19 C 08 43 22.73 +53 16 29.3 U I41
2021-11-14 11:20:41 C 08 43 23.43 +53 16 23.5 U I41
2021-11-14 11:53:00 C 08 43 24.23 +53 16 16.8 U I41
2021-11-14 12:16:19 C 08 43 24.82 +53 16 11.9 U I41
2021-11-17 19:03:48 C 08 45 14.09 +52 58 39.9 V D29
2021-11-17 19:04:44 C 08 45 14.10 +52 58 40.2 V D29
2021-11-17 19:18:49 C 08 45 14.28 +52 58 36.5 V D29
2021-11-17 19:19:46 C 08 45 14.30 +52 58 36.3 V D29
2021-11-17 19:33:51 C 08 45 14.51 +52 58 33.4 V D29
2021-11-17 19:34:48 C 08 45 14.56 +52 58 33.2 V D29
2021-11-18 12:12:18 C 08 45 31.76 +52 54 42.7 V T05
2021-11-18 12:16:55 C 08 45 31.91 +52 54 42.3 V T05
2021-11-18 12:20:53 C 08 45 31.86 +52 54 41.0 V T05
2021-11-18 12:28:08 C 08 45 31.98 +52 54 39.5 V T05
2021-11-20 06:42:18 C 08 46 04.93 +52 44 33.8 U I41
2021-11-20 07:41:56 C 08 46 05.47 +52 44 20.7 U I41
2021-11-20 09:20:37 C 08 46 06.29 +52 43 59.4 U I41
2021-11-20 10:00:52 C 08 46 06.55 +52 43 50.4 U I41
2021-11-20 10:42:02 C 08 46 06.83 +52 43 41.1 U I41
2021-11-20 13:40:06 C 08 46 08.52 +52 43 00.6 V T08
2021-11-20 13:42:46 C 08 46 08.52 +52 42 59.7 V T08
2021-11-20 13:46:46 C 08 46 08.44 +52 42 58.3 V T08
2021-11-20 13:56:04 C 08 46 08.50 +52 42 56.4 V T08
2021-11-22 14:11:49 C 08 46 24.59 +52 30 55.6 V T05
2021-11-22 14:14:27 C 08 46 24.68 +52 30 55.8 V T05
2021-11-22 14:18:26 C 08 46 24.66 +52 30 54.3 V T05
2021-11-22 14:25:42 C 08 46 24.70 +52 30 51.9 V T05
2021-11-24 12:20:56 C 08 46 21.46 +52 18 49.8 V T08
2021-11-24 12:24:15 C 08 46 21.34 +52 18 48.9 V T08
2021-11-24 12:33:11 C 08 46 21.29 +52 18 46.7 V T08
2021-11-24 12:41:56 C 08 46 21.31 +52 18 44.6 V T08
2021-11-26 12:24:44 C 08 45 56.55 +52 05 31.2 V T05
2021-11-26 12:28:03 C 08 45 56.55 +52 05 30.3 V T05
2021-11-26 12:33:24 C 08 45 56.44 +52 05 28.9 V T05
2021-11-26 12:41:18 C 08 45 56.32 +52 05 26.6 V T05
2021-11-27 11:21:49 C 08 45 36.42 +51 58 51.0 V V00
2021-11-27 11:28:52 C 08 45 36.28 +51 58 48.9 V V00
2021-11-27 11:35:54 C 08 45 36.13 +51 58 46.8 V V00
2021-11-27 11:42:55 C 08 45 35.99 +51 58 44.7 V V00