2025 YY4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7123382469 ± 6.89e-04
Semi-major axis (a)2.5032376133 AU ± 5.47e-03
Inclination (i)3.01806327° ± 2.77e-03
Long. of Asc. Node (Ω)79.29696203° ± 1.36e-03
Arg. of Perihelion (ω)84.62435543° ± 6.02e-04
Mean Anomaly (M)341.15585499° ± 6.54e-02
Mean Motion (n)0.2488623297°/day ± 8.15e-04
Perihelion dist (q)0.72008572 AU ± 2.33e-03
Aphelion dist (Q)4.28638951 AU ± 9.52e-03
Orbital Period3.96052823 yr ± 1.30e-02
Physical Parameters
H (abs. magnitude)25.03
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-03
RMS Residual0.317″
Uncertainty2
Orbit TypeApollo
MOID0.528532 AU
Observations Used33
Oppositions1
Arc Total2025-2025
First Observation Used2025-12-22
Last Observation Used2025-12-25
Observations (35)
Date Type RA Dec Mag Band Observatory
2025-12-22 06:02:29 C 07 28 42.366 +38 00 23.90 V 703
2025-12-22 06:05:49 C 07 28 47.021 +38 00 57.42 V 703
2025-12-22 06:09:08 C 07 28 51.708 +38 01 33.67 V 703
2025-12-22 06:12:27 C 07 28 56.420 +38 02 08.02 V 703
2025-12-22 06:50:24 C 07 29 50.482 +38 08 46.93 V I52
2025-12-22 06:50:39 C 07 29 50.863 +38 08 49.63 V I52
2025-12-22 06:50:54 C 07 29 51.198 +38 08 52.48 V I52
2025-12-22 06:51:09 C 07 29 51.562 +38 08 54.92 V I52
2025-12-22 07:36:23 C 07 30 56.862 +38 16 51.89 V I52
2025-12-22 07:36:38 C 07 30 57.226 +38 16 54.59 V I52
2025-12-22 07:36:53 C 07 30 57.629 +38 16 56.64 V I52
2025-12-22 07:37:08 C 07 30 57.953 +38 16 59.70 V I52
2025-12-22 11:25:50 B 07 37 12.929 +38 55 58.94 X Q06
2025-12-22 11:33:58 B 07 37 26.317 +38 57 30.92 X Q06
2025-12-22 11:42:05 B 07 37 39.904 +38 59 03.18 X Q06
2025-12-22 14:54:48 B 07 43 08.938 +39 35 57.34 W 900
2025-12-22 15:08:48 B 07 43 33.653 +39 38 39.37 W 900
2025-12-22 15:22:48 B 07 43 58.474 +39 41 20.58 W 900
2025-12-23 04:29:19 C 08 13 13.333 +42 18 04.46 V 703
2025-12-23 04:30:13 C 08 13 15.664 +42 18 17.41 V 703
2025-12-23 04:31:08 C 08 13 18.091 +42 18 29.39 V 703
2025-12-23 07:17:04 B 08 20 45.221 +42 55 04.73 W V21
2025-12-23 07:28:38 B 08 21 17.441 +42 57 35.93 W V21
2025-12-23 07:34:24 B 08 21 33.590 +42 58 51.28 W V21
2025-12-23 07:39:43 B 08 21 48.478 +43 00 00.58 W V21
2025-12-23 07:46:29 B 08 22 07.490 +43 01 28.31 W V21
2025-12-24 00:19:39 B 09 23 35.72 +46 13 40.2 X 958
2025-12-24 00:54:51 B 09 26 17.54 +46 19 20.5 X 958
2025-12-24 09:25:11 C 10 10 35.41 +47 11 55.3 V H21
2025-12-24 09:26:43 C 10 10 44.03 +47 11 59.2 V H21
2025-12-24 09:29:46 C 10 11 01.28 +47 12 06.6 V H21
2025-12-24 09:32:04 C 10 11 14.21 +47 12 12.1 V H21
2025-12-25 03:34:04 B 12 06 41.083 +44 12 21.67 Z K74
2025-12-25 03:40:13 B 12 07 20.705 +44 09 57.17 Z K74
2025-12-25 03:46:23 B 12 08 00.223 +44 07 31.40 Z K74