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
2000-01-11 02:28:07 C 02 48 13.17 +50 49 49.2 18.6 a 704
2000-01-11 02:49:46 C 02 48 14.12 +50 49 12.5 18.2 a 704
2000-01-21 03:12:19 C 03 01 54.46 +44 09 38.2 17.9 a 704
2000-01-21 03:33:33 C 03 01 55.74 +44 09 03.1 17.0 a 704
2000-01-21 03:54:51 C 03 01 56.98 +44 08 28.9 17.1 a 704
2000-02-02 10:25:45 C 03 22 31.95 +36 44 03.1 360
2000-02-02 10:29:29 C 03 22 32.23 +36 43 57.8 360
2000-02-02 10:33:15 C 03 22 32.49 +36 43 52.4 360
2000-02-03 09:51:09 C 03 24 17.98 +36 11 18.1 z 402
2000-02-03 09:52:58 C 03 24 18.13 +36 11 15.5 z 402
2000-02-03 09:54:48 C 03 24 18.22 +36 11 13.0 z 402
2000-02-10 01:48:32 C 03 36 44.70 +32 38 30.8 z 711
2000-02-10 01:56:11 C 03 36 45.29 +32 38 20.8 z 711
2000-02-10 10:37:36 C 03 37 26.83 +32 27 18.6 z 402
2000-02-10 10:39:25 C 03 37 26.94 +32 27 16.2 z 402
2000-02-10 10:41:13 C 03 37 27.06 +32 27 14.4 z 402
2000-02-22 18:58:16 C 04 01 56.13 +26 42 06.5 118
2000-02-22 19:00:02 C 04 01 56.36 +26 42 04.5 118
2000-02-22 19:03:18 C 04 01 56.67 +26 42 00.8 118
2000-03-04 03:12:05 C 04 23 24.31 +22 33 19.0 19.5 c 704
2000-03-04 03:31:03 C 04 23 26.00 +22 33 01.8 19.4 c 704
2000-03-04 03:50:03 C 04 23 27.64 +22 32 45.2 18.9 c 704
2000-08-10 08:38:01 C 11 33 02.52 -26 15 50.7 413
2000-08-10 08:40:47 C 11 33 02.895 -26 15 51.92 413
2000-08-10 08:43:09 C 11 33 03.28 -26 15 53.8 413
2001-09-27 06:27:44 C 23 11 25.45 +65 53 02.5 c 711
2001-09-27 06:38:34 C 23 11 23.76 +65 52 54.6 c 711
2001-09-27 06:49:28 C 23 11 22.43 +65 52 56.0 c 711
2001-12-23 01:44:09 C 23 16 53.15 +45 17 06.2 19.3 c 704
2001-12-23 02:06:05 C 23 16 55.18 +45 16 54.2 19.9 c 704
2001-12-23 02:28:00 C 23 16 57.14 +45 16 41.7 19.6 c 704
2001-12-23 02:49:59 C 23 16 59.11 +45 16 29.6 19.9 c 704
2001-12-23 03:11:52 C 23 17 01.04 +45 16 17.2 19.7 c 704
2002-01-06 01:41:33 C 23 49 52.87 +42 26 07.0 19.6 c 704
2002-01-06 02:03:05 C 23 49 55.04 +42 25 55.7 20.2 c 704
2002-01-06 02:24:32 C 23 49 57.29 +42 25 45.6 20.4 c 704
2002-01-06 02:46:00 C 23 49 59.41 +42 25 35.1 19.8 c 704
2002-01-06 03:07:28 C 23 50 01.68 +42 25 25.0 20.1 c 704
2003-08-18 05:41:40 C 22 11 57.79 +42 48 40.1 c 785
2003-08-18 05:50:09 C 22 11 56.90 +42 48 43.3 c 785
2003-08-18 06:01:18 C 22 11 55.88 +42 48 47.9 c 785
2003-08-19 22:34:20 C 22 08 30.29 +43 06 56.9 c 952
2003-08-19 22:40:05 C 22 08 29.88 +43 06 58.3 c 952
2003-08-19 22:41:32 C 22 08 29.74 +43 06 59.2 c 952
2003-08-19 22:43:35 C 22 08 29.51 +43 07 00.2 c 952
2003-08-19 22:47:05 C 22 08 29.24 +43 07 01.5 c 952
2003-08-19 22:50:35 C 22 08 28.91 +43 07 02.7 c 952
2003-08-19 22:54:06 C 22 08 28.59 +43 07 04.4 c 952
2003-08-19 23:04:24 C 22 08 27.72 +43 07 07.8 c 952
2003-08-19 23:14:07 C 22 08 26.81 +43 07 11.6 c 952