1580 Betulia (1950 KA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4876047101 ± 2.00e+00
Semi-major axis (a)2.1949743206 AU ± 3.00e+00
Inclination (i)52.18777815° ± 4.00e+00
Long. of Asc. Node (Ω)62.22480892° ± 5.00e+00
Arg. of Perihelion (ω)159.71713922° ± 6.00e+00
Mean Anomaly (M)80.26713945° ± 3.89e-05
Mean Motion (n)0.3030875594°/day ± 6.21e-01
Perihelion dist (q)1.12469450 AU ± 4.65e+00
Aphelion dist (Q)3.26525414 AU ± 6.26e+00
Orbital Period3.25195229 yr ± 6.67e+00
NGA Modelr2
A21.40142724e-06 AU/d²
Physical Parameters
H (abs. magnitude)14.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.282″
Uncertainty0
Orbit TypeAmor
MOID0.133321 AU
Observations Used1981
Radar Obs Used10
Gaia Obs Used93
Oppositions46
Arc Total1950-2016
First Observation Used1950-05-22
Last Observation Used2025-12-13
Observations (2056)
Date Type RA Dec Mag Band Observatory
2025-08-27 03:55:15 C 04 31 32.837 -68 12 32.08 V M22
2025-08-27 04:05:14 C 04 31 32.328 -68 12 37.84 V M22
2025-08-29 06:57:48 C 04 29 08.474 -68 41 13.24 V W68
2025-08-29 07:02:28 C 04 29 08.239 -68 41 16.12 V W68
2025-08-29 07:16:24 C 04 29 07.558 -68 41 23.93 V W68
2025-08-29 07:36:28 C 04 29 06.410 -68 41 35.52 V W68
2025-08-29 07:39:53 C 04 29 06.331 -68 41 37.64 V W68
2025-08-29 07:43:52 C 04 29 06.180 -68 41 39.77 V W68
2025-08-29 07:47:52 C 04 29 05.784 -68 41 42.40 V W68
2025-08-29 07:58:33 C 04 29 05.165 -68 41 49.24 V W68
2025-09-01 08:27:29 C 04 24 44.959 -69 21 50.08 V W68
2025-09-01 08:32:10 C 04 24 44.496 -69 21 52.31 V W68
2025-09-01 08:42:33 C 04 24 43.834 -69 21 57.82 V W68
2025-09-01 09:19:10 C 04 24 41.215 -69 22 18.95 V W68
2025-09-02 07:37:47 C 04 23 07.978 -69 34 21.40 V W68
2025-09-02 07:47:55 C 04 23 07.274 -69 34 27.37 V W68
2025-09-02 07:51:51 C 04 23 07.104 -69 34 29.42 V W68
2025-09-02 08:18:50 C 04 23 04.906 -69 34 44.15 V W68
2025-09-03 01:13:08 C 04 21 49.666 -69 43 46.24 V M22
2025-09-03 01:17:15 C 04 21 49.416 -69 43 48.11 V M22
2025-09-03 01:23:15 C 04 21 48.840 -69 43 51.64 V M22
2025-09-03 01:41:39 C 04 21 47.510 -69 44 01.54 V M22
2025-09-04 07:27:35 C 04 19 25.462 -69 59 42.97 V W68
2025-09-04 07:33:08 C 04 19 25.078 -69 59 46.36 V W68
2025-09-04 07:42:30 C 04 19 24.343 -69 59 51.72 V W68
2025-09-04 07:58:33 C 04 19 22.860 -69 59 59.32 V W68
2025-09-05 04:30:41 C 04 17 38.206 -70 10 33.46 V W68
2025-09-05 04:34:51 C 04 17 37.884 -70 10 36.48 V W68
2025-09-05 05:11:11 C 04 17 34.565 -70 10 56.21 V W68
2025-09-05 05:36:59 C 04 17 32.143 -70 11 09.82 V W68
2025-09-14 07:05:17 C 03 52 54.840 -71 50 25.55 V W68
2025-09-14 07:07:55 C 03 52 54.394 -71 50 26.95 V W68
2025-09-14 07:12:40 C 03 52 53.669 -71 50 28.46 V W68
2025-09-14 07:20:13 C 03 52 52.726 -71 50 31.56 V W68
2025-09-14 07:50:20 C 03 52 48.430 -71 50 43.66 V W68
2025-09-14 07:52:58 C 03 52 48.156 -71 50 43.91 V W68
2025-09-14 07:57:02 C 03 52 47.705 -71 50 46.10 V W68
2025-09-14 08:23:25 C 03 52 43.714 -71 50 56.22 V W68
2025-09-15 01:43:10 C 03 50 16.932 -71 57 27.68 V M22
2025-09-15 01:45:08 C 03 50 16.666 -71 57 28.26 V M22
2025-09-15 01:48:24 C 03 50 16.109 -71 57 29.41 V M22
2025-09-15 01:49:04 C 03 50 15.967 -71 57 30.13 V M22
2025-09-15 01:52:19 C 03 50 15.444 -71 57 31.21 V M22
2025-09-15 01:56:22 C 03 50 14.933 -71 57 32.69 V M22
2025-09-15 01:59:02 C 03 50 14.638 -71 57 33.16 V M22
2025-09-15 02:19:26 C 03 50 11.302 -71 57 41.83 V M22
2025-09-15 06:28:39 B 03 49 36.122 -71 59 12.41 q X22
2025-09-15 06:34:24 B 03 49 35.266 -71 59 13.85 q X22
2025-09-15 06:38:52 B 03 49 34.428 -71 59 16.19 q X22
2025-09-16 06:41:51 B 03 46 01.980 -72 07 47.60 q X22
Radar Observations (22)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1976-05-18 05:56:50 225980 7 Hz 2380 -1 -1
1976-05-18.247801 22598000 100 Hz 2380 251 251
1976-05-19 05:52:16 186012.5 7 Hz 2380 -1 -1
1976-05-19.244630 18601250 100 Hz 2380 251 251
1989-05-23 12:00:00 501134 20 Hz 8495 -14 -14
1989-05-23.500000 50113400 2000 Hz 8495 253 253
1989-05-26 01:42:00 185537450 12 us 2380 -1 -1
1989-05-26.070833 18553745000 12000 us 2380 251 251
1989-05-28 01:38:00 185094484 12 us 2380 -1 -1
1989-05-28.068056 18509448400 12000 us 2380 251 251
1989-05-29 00:20:00 -72175 5 Hz 2380 -1 -1
1989-05-29.013889 -7217500 500 Hz 2380 251 251
2002-05-28.997222 23747341100 10000 us 2380 251 251
2002-05-30 01:10:00 237420023 2 us 2380 -1 -1
2002-05-30 01:10:00 -16023.93 1 Hz 2380 -1 -1
2002-05-30.048611 23742002300 2000 us 2380 251 251
2002-06-01 00:57:00 240888928 2 us 2380 -1 -1
2002-06-01 00:57:00 -80205.3478 1 Hz 2380 -1 -1
2002-06-01.039583 24088892800 2000 us 2380 251 251
2002-06-03 00:09:00 248731233 2 us 2380 -1 -1
2002-06-03 00:09:00 -138436.315 1 Hz 2380 -1 -1
2002-06-03.006250 24873123300 2000 us 2380 251 251
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)