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
2022-01-01 03:43:53 S 07 28 39.761 +41 01 38.78 V C57
2022-01-01 03:43:53 s 1 +175618.19 1 +92074.266 5040.0 C57
2022-01-01 03:53:53 S 07 28 38.278 +41 01 21.65 V C57
2022-01-01 03:53:53 s 1 +175765.07 8 +92938.798 970.0 C57
2022-01-01 04:03:53 S 07 28 36.850 +41 01 05.92 V C57
2022-01-01 04:03:53 s 1 +175909.30 7 +93801.933 5800.0 C57
2022-01-01 04:13:53 S 07 28 35.258 +41 00 49.25 V C57
2022-01-01 04:13:53 s 1 +176050.89 6 +94663.667 9630.0 C57
2022-01-01 04:23:53 S 07 28 33.857 +41 00 33.01 V C57
2022-01-01 04:23:53 s 1 +176189.86 0 +95523.997 2500.0 C57
2022-01-01 04:33:53 S 07 28 32.587 +41 00 23.29 V C57
2022-01-01 04:33:53 s 1 +176326.21 8 +96382.922 4520.0 C57
2022-01-01 05:53:53 S 07 28 20.462 +40 58 14.09 V C57
2022-01-01 05:53:53 s 1 +177325.17 1 +103203.42 7840.0 C57
2022-01-01 06:03:53 S 07 28 19.142 +40 57 56.88 V C57
2022-01-01 06:03:53 s 1 +177438.79 1 +104049.59 5200.0 C57
2022-01-01 06:13:53 S 07 28 17.722 +40 57 40.93 V C57
2022-01-01 06:13:53 s 1 +177549.96 4 +104894.33 2390.0 C57
2022-01-01 06:23:53 S 07 28 16.176 +40 57 23.51 V C57
2022-01-01 06:23:53 s 1 +177658.70 3 +105737.64 9460.0 C57
2022-01-01 06:33:53 S 07 28 14.743 +40 57 08.46 V C57
2022-01-01 06:33:53 s 1 +177765.02 5 +106579.52 6490.0 C57
2022-01-01 06:43:53 S 07 28 13.226 +40 56 51.72 V C57
2022-01-01 06:43:53 s 1 +177868.94 4 +107419.97 3550.0 C57
2022-01-01 07:13:53 S 07 28 08.806 +40 56 04.81 V C57
2022-01-01 07:13:53 s 1 +178166.43 4 +109932.71 5480.0 C57
2022-01-01 07:23:53 S 07 28 07.438 +40 55 48.61 V C57
2022-01-01 07:23:53 s 1 +178260.89 0 +110767.42 3260.0 C57
2022-01-01 07:33:53 S 07 28 05.762 +40 55 32.77 V C57
2022-01-01 07:33:53 s 1 +178353.01 6 +111600.68 1380.0 C57
2022-01-01 07:43:53 S 07 28 04.445 +40 55 16.82 V C57
2022-01-01 07:43:53 s 1 +178442.82 7 +112432.51 9890.0 C57
2022-01-01 07:53:53 S 07 28 02.993 +40 55 00.91 V C57
2022-01-01 07:53:53 s 1 +178530.33 7 +113262.90 8870.0 C57
2022-01-01 08:03:53 S 07 28 01.339 +40 54 45.43 V C57
2022-01-01 08:03:53 s 1 +178615.55 9 +114091.84 8370.0 C57
2022-01-01 08:13:53 S 07 27 59.990 +40 54 29.99 V C57
2022-01-01 08:13:53 s 1 +178698.50 8 +114919.34 8450.0 C57
2022-01-01 08:23:53 S 07 27 58.238 +40 54 12.53 V C57
2022-01-01 08:23:53 s 1 +178779.19 7 +115745.39 9180.0 C57
2022-01-01 08:33:53 S 07 27 56.899 +40 53 56.98 V C57
2022-01-01 08:33:53 s 1 +178857.64 0 +116570.00 600.0 C57
2022-01-01 08:43:53 S 07 27 55.411 +40 53 39.91 V C57
2022-01-01 08:43:53 s 1 +178933.85 1 +117393.17 2790.0 C57
2022-01-01 08:53:53 S 07 27 53.873 +40 53 23.53 V C57
2022-01-01 08:53:53 s 1 +179007.84 3 +118214.89 5790.0 C57
2022-01-01 09:03:53 S 07 27 52.414 +40 53 09.71 V C57
2022-01-01 09:03:53 s 1 +179079.62 9 +119035.16 9670.0 C57
2022-01-01 09:13:53 S 07 27 50.990 +40 52 52.90 V C57
2022-01-01 09:13:53 s 1 +179149.22 3 +119853.98 4480.0 C57