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
2020-03-29 06:36:16 S 22 12 41.28 -86 16 15.8 L C51
2020-03-29 14:27:09 S 22 16 48.319 -86 12 59.33 L C51
2020-03-29 17:35:28 S 22 18 25.558 -86 11 39.73 L C51
2020-03-29 20:43:58 S 22 19 59.498 -86 10 20.10 L C51
2020-06-14 12:08:55 C 15 39 30.27 -73 51 46.6 q E89
2020-06-14 12:15:18 C 15 39 30.04 -73 51 34.2 q E89
2020-06-22 19:14:32 C 15 38 27.16 -66 53 49.8 o K95
2020-06-22 20:01:08 C 15 38 27.57 -66 52 07.2 o K95
2020-07-12 00:52:04 C 15 52 54.16 -50 12 45.3 q X74
2020-07-12 01:17:49 C 15 52 55.15 -50 11 53.1 q X74
2020-07-12 01:43:18 C 15 52 56.17 -50 11 00.6 q X74
2020-07-14 01:09:40 C 15 55 03.77 -48 35 45.5 q X74
2020-07-14 01:33:42 C 15 55 04.72 -48 34 57.3 q X74
2020-07-14 01:57:38 C 15 55 05.79 -48 34 09.9 q X74
2020-07-21 07:09:14 C 16 03 26.82 -43 08 55.5 V T08
2020-07-21 07:15:13 C 16 03 27.09 -43 08 44.7 V T08
2020-07-21 07:38:33 C 16 03 28.20 -43 08 03.2 V T08
2020-08-12 06:44:01 C 16 32 49.11 -30 35 06.4 V T05
2020-08-12 06:49:20 C 16 32 49.40 -30 34 59.6 V T05
2020-08-12 06:59:15 C 16 32 49.98 -30 34 48.8 V T05
2020-08-12 07:17:07 C 16 32 51.00 -30 34 29.2 V T05
2020-08-14 07:12:55 C 16 35 43.44 -29 42 20.3 V T08
2020-08-14 07:17:36 C 16 35 43.72 -29 42 15.5 V T08
2020-08-14 07:46:08 C 16 35 45.38 -29 41 44.7 V T08
2021-07-01 11:10:50 C 02 45 35.04 +46 41 59.9 U I41
2021-07-01 11:14:26 C 02 45 35.44 +46 42 02.2 U I41
2021-07-02 11:09:27 C 02 48 17.94 +46 55 59.1 U I41
2021-07-02 11:13:05 C 02 48 18.34 +46 56 01.7 U I41
2021-07-02 11:16:42 C 02 48 18.75 +46 56 03.9 U I41
2021-09-08 10:55:55 C 06 16 43.96 +56 10 50.4 U I41
2021-09-08 11:46:18 C 06 16 50.38 +56 10 54.5 U I41
2021-09-10 11:11:37 C 06 22 57.37 +56 13 43.7 U I41
2021-09-10 11:48:48 C 06 23 02.10 +56 13 46.1 U I41
2021-09-25 13:56:16 C 07 07 37.089 +56 13 14.33 U F52
2021-09-25 14:13:48 C 07 07 39.068 +56 13 13.88 U F52
2021-09-25 14:31:19 C 07 07 41.094 +56 13 12.81 U F52
2021-09-30 11:08:13 C 07 21 00.90 +56 05 42.3 U I41
2021-09-30 11:46:40 C 07 21 05.15 +56 05 39.1 U I41
2021-09-30 12:06:34 C 07 21 07.32 +56 05 38.1 U I41
2021-09-30 12:07:56 C 07 21 07.46 +56 05 37.7 U I41
2021-10-02 10:35:41 C 07 26 15.70 +56 01 47.8 V 703
2021-10-02 10:43:37 C 07 26 16.65 +56 01 46.3 V 703
2021-10-02 10:51:35 C 07 26 17.46 +56 01 46.1 V 703
2021-10-02 10:59:31 C 07 26 18.21 +56 01 45.8 V 703
2021-10-09 09:17:19 C 07 43 47.02 +55 44 29.8 U I41
2021-10-09 11:11:10 C 07 43 58.32 +55 44 18.4 U I41
2021-10-10 09:48:23 C 07 46 13.82 +55 41 33.2 U I41
2021-10-10 11:11:07 C 07 46 21.89 +55 41 24.3 U I41
2021-10-10 11:43:26 C 07 46 25.02 +55 41 20.4 U I41
2021-10-11 10:00:47 C 07 48 36.68 +55 38 32.4 V 703