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
2023-12-11 08:20:32 C 00 33 26.966 +63 39 19.30 V T08
2023-12-11 08:33:58 C 00 33 27.598 +63 39 06.52 V T08
2024-01-02 06:52:11 C 01 11 43.049 +52 59 34.15 V T05
2024-01-02 07:06:44 C 01 11 44.287 +52 59 17.02 V T05
2024-01-02 07:12:15 C 01 11 44.801 +52 59 09.92 V T05
2024-01-02 07:28:48 C 01 11 46.222 +52 58 49.55 V T05
2024-01-04 07:22:00 C 01 16 03.204 +52 01 13.55 V T08
2024-01-04 07:27:32 C 01 16 03.706 +52 01 06.60 V T08
2024-01-04 07:36:07 C 01 16 04.445 +52 00 56.70 V T08
2024-01-04 07:50:43 C 01 16 05.712 +52 00 38.41 V T08
2024-01-16 06:55:37 C 01 43 19.423 +46 27 41.65 V T08
2024-01-16 06:59:41 C 01 43 19.860 +46 27 36.86 V T08
2024-01-16 07:09:02 C 01 43 20.714 +46 27 26.86 V T08
2024-01-16 07:26:00 C 01 43 22.423 +46 27 07.52 V T08
2024-01-19 06:39:47 C 01 50 26.446 +45 08 43.30 V T08
2024-01-19 06:45:24 C 01 50 26.921 +45 08 37.07 V T08
2024-01-19 06:48:11 C 01 50 27.214 +45 08 34.08 V T08
2024-01-19 06:55:52 C 01 50 27.967 +45 08 26.12 V T08
2024-01-19 06:56:32 C 01 50 28.018 +45 08 24.72 V T08
2024-01-19 07:05:09 C 01 50 28.884 +45 08 15.04 V T08
2024-01-19 07:32:00 C 01 50 31.589 +45 07 45.84 V T08
2024-01-19 07:38:28 C 01 50 32.194 +45 07 37.74 V T08
2024-01-20 06:53:52 C 01 52 51.838 +44 42 28.30 V T05
2024-01-20 07:07:26 C 01 52 53.174 +44 42 13.64 V T05
2024-01-20 07:11:43 C 01 52 53.599 +44 42 08.89 V T05
2024-01-20 07:27:12 C 01 52 55.102 +44 41 51.54 V T05
2024-01-28 07:09:34 C 02 12 22.997 +41 22 18.52 V T05
2024-01-28 07:14:48 C 02 12 23.479 +41 22 13.15 V T05
2024-01-28 07:22:42 C 02 12 24.288 +41 22 05.05 V T05
2024-01-28 07:48:12 C 02 12 26.909 +41 21 39.20 V T05
2024-01-30 03:29:28 C 02 16 56.676 +40 38 11.44 V 703
2024-01-30 03:32:45 C 02 16 57.032 +40 38 08.20 V 703
2024-01-30 03:36:02 C 02 16 57.356 +40 38 05.39 V 703
2024-01-30 03:39:19 C 02 16 57.688 +40 38 01.75 V 703
2024-01-31 06:51:41 C 02 19 46.013 +40 11 22.78 V T08
2024-01-31 07:02:00 C 02 19 47.098 +40 11 12.77 V T08
2024-01-31 07:04:40 C 02 19 47.323 +40 11 09.71 V T08
2024-01-31 07:06:39 C 02 19 47.561 +40 11 08.84 V T08
2024-01-31 07:09:19 C 02 19 47.794 +40 11 05.35 V T08
2024-01-31 07:19:57 C 02 19 48.878 +40 10 54.73 V T08
2024-01-31 07:30:53 C 02 19 50.002 +40 10 44.44 V T08
2024-01-31 07:34:53 C 02 19 50.381 +40 10 40.37 V T08
2024-02-01 06:48:28 C 02 22 14.606 +39 48 08.06 V T05
2024-02-01 06:53:02 C 02 22 15.043 +39 48 03.74 V T05
2024-02-01 07:16:18 C 02 22 17.467 +39 47 41.28 V T05
2024-02-01 07:24:08 C 02 22 18.185 +39 47 33.79 V T05
2024-02-03 06:38:34 C 02 27 12.106 +39 02 23.96 V T08
2024-02-03 06:42:34 C 02 27 12.506 +39 02 19.75 V T08
2024-02-03 06:52:48 C 02 27 13.555 +39 02 10.14 V T08
2024-02-03 07:07:26 C 02 27 15.082 +39 01 56.42 V T08