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
2022-01-03 02:53:53 S 07 21 22.284 +39 42 10.22 V C57
2022-01-03 02:53:53 s 1 +150788.18 7 +281059.07 3470.0 C57
2022-01-03 03:03:53 S 07 21 20.825 +39 41 52.33 V C57
2022-01-03 03:03:53 s 1 +150552.92 2 +281542.82 3040.0 C57
2022-01-03 03:13:53 S 07 21 19.188 +39 41 34.30 V C57
2022-01-03 03:13:53 s 1 +150317.01 3 +282025.41 160.0 C57
2022-01-03 03:23:53 S 07 21 17.563 +39 41 17.02 V C57
2022-01-03 03:23:53 s 1 +150080.46 4 +282506.81 4830.0 C57
2022-01-03 03:33:53 S 07 21 16.061 +39 40 57.50 V C57
2022-01-03 03:33:53 s 1 +149843.27 8 +282987.05 7060.0 C57
2022-01-03 03:43:53 S 07 21 14.378 +39 40 39.79 V C57
2022-01-03 03:43:53 s 1 +149605.45 7 +283466.11 6880.0 C57
2022-01-03 03:53:53 S 07 21 12.773 +39 40 22.33 V C57
2022-01-03 03:53:53 s 1 +149367.00 4 +283944.00 4270.0 C57
2022-01-03 04:03:53 S 07 21 11.172 +39 40 03.94 V C57
2022-01-03 04:03:53 s 1 +149127.92 0 +284420.72 9270.0 C57
2022-01-03 04:13:53 S 07 21 09.571 +39 39 46.01 V C57
2022-01-03 04:13:53 s 1 +148888.21 0 +284896.27 1870.0 C57
2022-01-03 04:23:53 S 07 21 07.968 +39 39 27.90 V C57
2022-01-03 04:23:53 s 1 +148647.87 6 +285370.66 2100.0 C57
2022-01-03 04:43:53 S 07 21 04.742 +39 38 53.48 V C57
2022-01-03 04:43:53 s 1 +148165.34 4 +286315.93 5450.0 C57
2022-01-03 04:49:47 C 07 20 10.48 +39 30 43.6 V 703
2022-01-03 04:57:38 C 07 20 09.21 +39 30 29.1 V 703
2022-01-03 05:05:30 C 07 20 07.93 +39 30 14.7 V 703
2022-01-03 05:13:22 C 07 20 06.66 +39 30 00.0 V 703
2022-01-03 05:33:53 S 07 20 56.815 +39 37 23.12 V C57
2022-01-03 05:33:53 s 1 +146948.26 6 +288658.75 7930.0 C57
2022-01-03 05:43:53 S 07 20 55.121 +39 37 03.97 V C57
2022-01-03 05:43:53 s 1 +146703.02 8 +289123.84 9500.0 C57
2022-01-03 05:53:53 S 07 20 53.642 +39 36 46.51 V C57
2022-01-03 05:53:53 s 1 +146457.18 8 +289587.76 8790.0 C57
2022-01-03 06:03:53 S 07 20 51.900 +39 36 28.80 V C57
2022-01-03 06:03:53 s 1 +146210.75 0 +290050.53 5800.0 C57
2022-01-03 06:13:53 S 07 20 50.246 +39 36 10.98 V C57
2022-01-03 06:13:53 s 1 +145963.71 4 +290512.15 550.0 C57
2022-01-03 06:23:53 S 07 20 48.634 +39 35 52.66 V C57
2022-01-03 06:23:53 s 1 +145716.08 5 +290972.61 3050.0 C57
2022-01-03 06:33:53 S 07 20 47.071 +39 35 34.15 V C57
2022-01-03 06:33:53 s 1 +145467.86 3 +291431.92 3300.0 C57
2022-01-03 06:43:53 S 07 20 45.593 +39 35 15.50 V C57
2022-01-03 06:43:53 s 1 +145219.05 3 +291890.07 1320.0 C57
2022-01-03 06:53:53 S 07 20 43.920 +39 34 58.22 V C57
2022-01-03 06:53:53 s 1 +144969.65 5 +292347.08 7120.0 C57
2022-01-03 07:03:53 S 07 20 42.240 +39 34 39.22 V C57
2022-01-03 07:03:53 s 1 +144719.67 3 +292802.93 710.0 C57
2022-01-03 07:13:53 S 07 20 40.651 +39 34 21.58 V C57
2022-01-03 07:13:53 s 1 +144469.10 8 +293257.64 2090.0 C57
2022-01-03 07:23:53 S 07 20 39.077 +39 34 03.65 V C57
2022-01-03 07:23:53 s 1 +144217.96 4 +293711.20 1290.0 C57