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
2018-07-11 16:08:06 C 20 21 47.48 -11 57 29.4 q D29
2018-07-11 16:34:41 C 20 21 44.68 -11 57 04.3 q D29
2018-07-11 16:36:28 C 20 21 44.49 -11 57 02.7 q D29
2018-07-13 00:25:43 C 20 18 28.53 -11 27 10.5 c J04
2018-07-13 00:42:33 C 20 18 26.76 -11 26 54.8 c J04
2018-07-13 00:59:23 C 20 18 24.98 -11 26 39.1 c J04
2018-07-13 01:16:14 C 20 18 23.20 -11 26 23.3 c J04
2018-07-13 12:38:09 C 20 17 12.62 -11 15 45.7 U T08
2018-07-13 12:53:43 C 20 17 10.97 -11 15 32.2 U T08
2018-07-13 12:54:23 C 20 17 10.92 -11 15 31.0 U T08
2018-07-13 13:09:17 C 20 17 09.34 -11 15 17.4 U T08
2018-07-13 13:09:57 C 20 17 09.27 -11 15 16.5 U T08
2018-07-13 13:24:52 C 20 17 07.71 -11 15 02.4 U T08
2018-07-13 13:25:32 C 20 17 07.63 -11 15 01.8 U T08
2018-07-17 11:59:54 C 20 07 24.35 -09 48 14.8 U T08
2018-07-17 12:15:11 C 20 07 22.70 -09 48 01.1 U T08
2018-07-17 12:29:42 C 20 07 21.22 -09 47 47.6 U T08
2018-08-05 21:43:15 C 19 25 13.73 -03 50 35.4 q 160
2018-08-05 21:46:22 C 19 25 13.51 -03 50 33.5 q 160
2018-08-05 21:49:29 C 19 25 13.28 -03 50 31.5 q 160
2018-08-06 21:31:32 C 19 23 30.79 -03 36 22.1 q 160
2018-08-06 21:34:23 C 19 23 30.50 -03 36 21.1 q 160
2018-08-08 10:56:34 C 19 20 55.02 -03 14 48.9 U T05
2018-08-08 10:59:14 C 19 20 54.78 -03 14 47.5 U T05
2018-08-08 11:27:24 C 19 20 52.88 -03 14 31.7 U T05
2018-08-08 11:30:03 C 19 20 52.64 -03 14 30.4 U T05
2018-08-10 10:36:41 C 19 17 48.56 -02 48 55.4 U T08
2018-08-10 10:38:08 C 19 17 48.50 -02 48 54.5 U T08
2018-08-10 10:52:29 C 19 17 47.56 -02 48 48.1 U T08
2018-08-10 10:53:09 C 19 17 47.51 -02 48 47.3 U T08
2018-08-10 11:07:37 C 19 17 46.58 -02 48 37.5 U T08
2018-08-10 11:08:57 C 19 17 46.50 -02 48 38.7 U T08
2018-08-11 21:40:02 C 19 15 40.19 -02 30 59.0 q 160
2018-08-11 21:43:10 C 19 15 39.99 -02 30 57.0 q 160
2018-08-11 21:46:16 C 19 15 39.80 -02 30 55.3 q 160
2018-08-12 22:01:07 C 19 14 14.98 -02 19 00.9 q 160
2018-08-12 22:04:02 C 19 14 14.84 -02 18 58.8 q 160
2018-08-12 22:07:00 C 19 14 14.66 -02 18 57.5 q 160
2018-08-13 01:19:40 C 19 14 04.01 -02 17 23.6 q W34
2018-08-13 01:56:02 C 19 14 01.89 -02 17 05.9 q W34
2018-08-13 02:11:32 C 19 14 00.99 -02 16 59.0 q W34
2018-08-14 10:02:21 C 19 12 15.31 -02 01 58.9 U T08
2018-08-14 10:17:24 C 19 12 14.49 -02 01 52.0 U T08
2018-08-14 10:30:34 C 19 12 13.71 -02 01 46.5 U T08
2018-08-14 10:33:14 C 19 12 13.60 -02 01 44.6 U T08
2018-08-14 10:48:24 C 19 12 12.79 -02 01 37.8 U T08
2018-08-15 04:07:19 C 19 11 18.62 -01 53 49.8 U I41
2018-08-15 07:37:54 C 19 11 07.33 -01 52 15.7 U I41
2018-08-15 21:11:03 C 19 10 26.30 -01 46 19.1 q 160
2018-08-15 21:14:10 C 19 10 26.13 -01 46 17.2 q 160