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
2022-01-20 00:30:46 C 06 21 52.05 +23 44 48.7 V L54
2022-01-20 00:43:51 C 06 21 50.49 +23 44 14.6 V L54
2022-01-21 22:28:47 C 06 16 39.83 +21 45 43.7 V G17
2022-01-21 22:31:07 C 06 16 39.54 +21 45 38.0 V G17
2022-01-21 22:35:01 C 06 16 39.10 +21 45 27.4 V G17
2022-01-22 09:35:52 C 06 15 27.49 +21 17 09.6 V T08
2022-01-22 09:40:34 C 06 15 26.97 +21 16 57.5 V T08
2022-01-22 09:41:54 C 06 15 26.82 +21 16 54.2 V T08
2022-01-22 09:46:32 C 06 15 26.29 +21 16 42.2 V T08
2022-01-22 09:56:54 C 06 15 25.13 +21 16 15.3 V T08
2022-01-22 09:58:14 C 06 15 24.99 +21 16 12.0 V T08
2022-01-22 19:41:36 C 06 14 23.76 +20 51 04.0 Z L74
2022-01-22 19:45:17 C 06 14 23.36 +20 50 54.8 Z L74
2022-01-22 19:48:44 C 06 14 22.97 +20 50 46.0 Z L74
2022-01-22 20:40:20 C 06 14 17.37 +20 48 32.9 q L47
2022-01-22 20:43:35 C 06 14 17.02 +20 48 24.2 q L47
2022-01-23 18:01:48 C 06 12 05.50 +19 53 50.6 V L92
2022-01-23 18:06:52 C 06 12 04.97 +19 53 37.7 V L92
2022-01-23 18:12:29 C 06 12 04.34 +19 53 23.7 V L92
2022-01-23 18:18:07 C 06 12 03.81 +19 53 09.1 V L92
2022-01-23 19:59:06 C 06 11 53.24 +19 48 50.7 q L47
2022-01-23 20:01:52 C 06 11 52.94 +19 48 44.5 q L47
2022-01-24 10:15:46 C 06 10 26.96 +19 12 38.1 V T05
2022-01-24 10:20:23 C 06 10 26.49 +19 12 26.4 V T05
2022-01-24 10:33:35 C 06 10 25.13 +19 11 52.7 V T05
2022-01-24 10:50:06 C 06 10 23.44 +19 11 10.5 V T05
2022-01-25 00:03:42 C 06 09 07.86 +18 37 38.8 V W46
2022-01-25 01:08:54 C 06 09 01.39 +18 34 55.3 V W46
2022-01-25 01:19:11 C 06 09 00.37 +18 34 29.4 V W46
2022-01-25 02:51:06 C 06 08 51.75 +18 30 37.9 V V11
2022-01-25 03:11:09 C 06 08 49.75 +18 29 47.5 V V11
2022-01-25 03:31:23 C 06 08 47.71 +18 28 56.6 V V11
2022-01-25 17:17:41 C 06 07 29.80 +17 54 26.2 q C97
2022-01-25 17:18:29 C 06 07 29.73 +17 54 24.1 q C97
2022-01-25 17:20:06 C 06 07 29.56 +17 54 20.2 q C97
2022-01-25 17:20:55 C 06 07 29.50 +17 54 17.9 q C97
2022-01-25 17:21:43 C 06 07 29.40 +17 54 15.8 q C97
2022-01-25 17:23:19 C 06 07 29.25 +17 54 12.1 q C97
2022-01-25 17:24:07 C 06 07 29.19 +17 54 10.3 q C97
2022-01-25 17:26:32 C 06 07 28.96 +17 54 03.8 q C97
2022-01-25 17:28:56 C 06 07 28.70 +17 53 58.1 q C97
2022-01-25 20:46:01 C 06 07 10.44 +17 45 39.5 V 160
2022-01-25 20:48:56 C 06 07 10.16 +17 45 32.3 V 160
2022-01-25 20:51:51 C 06 07 09.88 +17 45 24.9 V 160
2022-01-26 03:33:10 C 06 06 33.54 +17 28 47.6 V G96
2022-01-26 03:41:18 C 06 06 32.77 +17 28 27.4 V G96
2022-01-26 03:49:26 C 06 06 32.00 +17 28 07.3 V G96
2022-01-26 03:57:32 C 06 06 31.23 +17 27 47.1 V G96
2022-01-26 06:52:06 C 06 06 15.50 +17 20 37.0 V T08
2022-01-26 07:05:25 C 06 06 14.23 +17 20 04.0 V T08