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
2025-10-23 20:59:16 C 01 07 48.310 -68 50 26.30 V M22
2025-10-23 21:06:31 C 01 07 47.290 -68 50 21.73 V M22
2025-10-23 21:35:34 C 01 07 43.733 -68 49 59.09 V M22
2025-10-28 03:04:56 C 00 56 33.055 -67 28 17.51 V W68
2025-10-28 03:11:04 C 00 56 32.261 -67 28 12.07 V W68
2025-10-28 03:18:21 C 00 56 31.644 -67 28 05.56 V W68
2025-10-28 03:32:03 C 00 56 30.043 -67 27 54.14 V W68
2025-10-29 03:31:10 C 00 54 09.914 -67 07 29.32 V W68
2025-10-29 03:35:07 C 00 54 09.631 -67 07 25.18 V W68
2025-10-29 03:44:27 C 00 54 08.652 -67 07 17.18 V W68
2025-10-29 04:00:55 C 00 54 07.154 -67 07 02.93 V W68
2025-11-09 02:51:33 C 00 35 15.785 -63 02 41.57 V W68
2025-11-09 02:56:55 C 00 35 15.562 -63 02 36.82 V W68
2025-11-09 03:04:14 C 00 35 15.070 -63 02 28.64 V W68
2025-11-09 03:21:37 C 00 35 14.263 -63 02 11.47 V W68
2025-11-10 20:49:32 C 00 33 14.911 -62 21 03.06 V M22
2025-11-10 20:53:29 C 00 33 14.688 -62 20 58.24 V M22
2025-11-10 21:00:46 C 00 33 14.304 -62 20 52.12 V M22
2025-11-10 21:14:59 C 00 33 13.598 -62 20 37.21 V M22
2025-11-15 02:50:47 C 00 29 17.575 -60 37 51.20 V W68
2025-11-15 02:55:26 C 00 29 17.477 -60 37 45.73 V W68
2025-11-15 03:04:05 C 00 29 17.088 -60 37 37.45 V W68
2025-11-15 03:33:30 C 00 29 16.188 -60 37 06.78 V W68
2025-11-16 20:43:53 C 00 28 01.574 -59 54 47.56 V M22
2025-11-16 20:50:00 C 00 28 01.298 -59 54 42.91 V M22
2025-11-16 20:57:55 C 00 28 01.272 -59 54 33.98 V M22
2025-11-16 21:13:00 C 00 28 00.667 -59 54 17.53 V M22
2025-11-19 20:26:12 C 00 26 17.494 -58 40 28.70 V M22
2025-11-19 20:30:48 C 00 26 17.398 -58 40 23.16 V M22
2025-11-19 20:40:44 C 00 26 17.201 -58 40 13.51 V M22
2025-11-19 20:55:49 C 00 26 16.894 -58 39 57.24 V M22
2025-11-22 02:33:11 C 00 25 18.869 -57 43 57.22 V W68
2025-11-22 02:37:47 C 00 25 18.826 -57 43 52.90 V W68
2025-11-22 02:45:51 C 00 25 18.686 -57 43 44.15 V W68
2025-11-22 03:03:23 C 00 25 18.362 -57 43 25.10 V W68
2025-11-25 01:42:53 C 00 24 25.716 -56 29 16.55 V W68
2025-11-25 01:47:33 C 00 24 25.778 -56 29 12.34 V W68
2025-11-25 01:56:17 C 00 24 25.639 -56 29 02.54 V W68
2025-11-25 02:11:01 C 00 24 25.447 -56 28 46.60 V W68
2025-11-27 02:21:31 C 00 24 03.554 -55 38 05.50 V W68
2025-11-27 02:22:11 C 00 24 03.569 -55 38 05.14 V W68
2025-11-27 02:26:24 C 00 24 03.703 -55 38 00.78 V W68
2025-11-27 02:35:23 C 00 24 03.480 -55 37 51.38 V W68
2025-11-27 02:56:29 C 00 24 03.386 -55 37 29.35 V W68
2025-12-10 19:37:14 C 00 25 38.402 -49 53 14.57 V M22
2025-12-10 19:41:18 C 00 25 38.232 -49 53 11.26 V M22
2025-12-10 19:49:33 C 00 25 38.606 -49 53 01.18 V M22
2025-12-10 19:56:25 C 00 25 38.590 -49 52 54.95 V M22
2025-12-10 20:06:49 C 00 25 38.789 -49 52 43.57 V M22
2025-12-13 19:20:18 C 00 26 44.292 -48 39 14.62 V M22
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)