437844 (1999 MN)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6653473346 ± 2.00e+00
Semi-major axis (a)0.6740395680 AU ± 3.00e+00
Inclination (i)2.03172774° ± 4.00e+00
Long. of Asc. Node (Ω)81.38643524° ± 5.00e+00
Arg. of Perihelion (ω)9.20346724° ± 6.00e+00
Mean Anomaly (M)107.50856911° ± 7.62e-06
Mean Motion (n)1.7810831244°/day ± 1.19e+01
Perihelion dist (q)0.22556914 AU ± 1.68e+00
Aphelion dist (Q)1.12251000 AU ± 5.17e+00
Orbital Period0.55338590 yr ± 3.69e+00
NGA Modelr2
A24.15125214e-06 AU/d²
Physical Parameters
H (abs. magnitude)21.01
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-27
RMS Residual0.348″
Uncertainty0
Orbit TypeAten
MOID0.005953 AU
Observations Used264
Oppositions21
Arc Total1999-2025
First Observation Used1999-06-22
Last Observation Used2025-07-14
Observations (290)
Date Type RA Dec Mag Band Observatory
2025-06-18 09:37:51 C 21 29 10.612 -18 03 24.23 V I52
2025-06-19 08:31:40 C 21 24 53.579 -18 39 41.44 V G96
2025-06-19 08:39:24 C 21 24 51.926 -18 39 54.54 V G96
2025-06-19 08:47:10 C 21 24 50.303 -18 40 07.72 V G96
2025-06-19 08:54:55 C 21 24 48.654 -18 40 20.89 V G96
2025-06-19 10:54:20 C 21 24 23.062 -18 43 42.13 V I52
2025-06-19 10:58:07 C 21 24 22.208 -18 43 48.43 V I52
2025-06-19 11:01:54 C 21 24 21.377 -18 43 54.66 V I52
2025-06-19 11:12:15 C 21 24 19.138 -18 44 11.90 V I52
2025-06-20 09:50:10 C 21 19 30.284 -19 23 48.34 V I52
2025-06-20 09:54:42 C 21 19 29.197 -19 23 56.94 V I52
2025-06-20 09:57:48 C 21 19 28.434 -19 24 02.66 V I52
2025-06-20 10:00:54 C 21 19 27.685 -19 24 08.28 V I52
2025-06-21 10:27:21 C 21 13 32.866 -20 11 02.47 V 703
2025-06-21 10:30:37 C 21 13 32.005 -20 11 07.94 V 703
2025-06-21 10:33:52 C 21 13 31.040 -20 11 14.89 V 703
2025-06-21 10:37:08 C 21 13 30.158 -20 11 22.20 V 703
2025-06-22 04:07:36 C 21 08 46.481 -20 47 44.34 V R17
2025-06-22 04:13:39 C 21 08 44.652 -20 47 57.55 V R17
2025-06-22 04:31:15 C 21 08 39.350 -20 48 35.14 V R17
2025-06-22 04:49:04 C 21 08 33.967 -20 49 13.40 V R17
2025-06-23 09:17:42 C 20 59 50.626 -21 54 04.86 V 703
2025-06-23 09:20:57 C 20 59 49.452 -21 54 12.74 V 703
2025-06-23 09:24:13 C 20 59 48.343 -21 54 20.88 V 703
2025-06-23 09:27:28 C 20 59 47.202 -21 54 28.15 V 703
2025-06-24 09:18:39 C 20 51 15.158 -22 52 59.99 V W68
2025-06-24 09:23:27 C 20 51 13.231 -22 53 12.41 V W68
2025-06-24 09:46:51 C 20 51 03.905 -22 54 11.66 V W68
2025-06-24 10:12:16 C 20 50 53.818 -22 55 16.64 V W68
2025-06-25 02:56:17 C 20 44 12.410 -23 40 23.38 V M22
2025-06-25 03:00:21 C 20 44 10.622 -23 40 34.00 V M22
2025-06-25 03:03:21 C 20 44 12.406 -23 41 59.75 V R17
2025-06-25 03:08:58 C 20 44 06.811 -23 40 57.83 V M22
2025-06-25 03:10:19 C 20 44 06.257 -23 41 01.28 V M22
2025-06-25 03:22:56 C 20 44 03.725 -23 42 54.25 V R17
2025-06-25 03:25:17 C 20 43 59.650 -23 41 42.07 V M22
2025-06-25 03:42:30 C 20 43 55.049 -23 43 48.65 V R17
2025-06-25 04:00:58 C 20 43 44.023 -23 43 18.66 V M22
2025-06-25 04:02:11 C 20 43 46.289 -23 44 43.19 V R17
2025-06-25 04:04:21 C 20 43 42.526 -23 43 27.26 V M22
2025-06-25 04:15:40 C 20 43 37.548 -23 43 57.97 V M22
2025-06-25 04:36:30 C 20 43 28.490 -23 44 53.77 V M22
2025-06-27 06:59:53 C 20 18 40.990 -26 16 22.08 V W68
2025-06-27 07:04:36 C 20 18 38.174 -26 16 37.02 V W68
2025-06-27 07:13:57 C 20 18 32.618 -26 17 06.54 V W68
2025-06-27 08:02:28 C 20 18 03.672 -26 19 40.33 V W68
2025-06-28 11:33:44 C 20 00 59.455 -27 51 20.77 V T05
2025-06-28 11:48:53 C 20 00 48.821 -27 52 11.06 V T05
2025-06-28 12:06:40 C 20 00 36.271 -27 53 10.79 V T05
2025-06-28 12:58:49 C 19 59 59.412 -27 56 03.98 V T05
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2004-07-22 18:36:00 -248029.89 1 Hz 2380 -1 -1
2004-07-23 18:45:00 112608631.7 4 us 2380 -1 -1
2005-05-30 18:10:00 82102.17 0.5 Hz 2380 -1 -1
2005-05-31 19:10:00 51957109.5 0.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)