4769 Castalia (1989 PB)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4831981091 ± 2.00e+00
Semi-major axis (a)1.0630936583 AU ± 3.00e+00
Inclination (i)8.88518894° ± 4.00e+00
Long. of Asc. Node (Ω)325.50236492° ± 5.00e+00
Arg. of Perihelion (ω)121.45274993° ± 6.00e+00
Mean Anomaly (M)323.77077031° ± 1.44e-04
Mean Motion (n)0.8991972810°/day ± 3.81e+00
Perihelion dist (q)0.54940881 AU ± 2.63e+00
Aphelion dist (Q)1.57677850 AU ± 4.93e+00
Orbital Period1.09611795 yr ± 4.64e+00
NGA Modelr2
A2-3.22072326e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.40
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.435″
Uncertainty0
Orbit TypeApollo
MOID0.020034 AU
Observations Used614
Radar Obs Used13
Gaia Obs Used139
Oppositions2
Arc Total1989-2026
First Observation Used1989-08-01
Last Observation Used2026-03-31
Observations (654)
Date Type RA Dec Mag Band Observatory
2000-07-29 10:09:29 C 01 42 13.06 +09 05 21.9 i 739
2000-07-29 10:11:04 C 01 42 13.43 +09 05 25.9 i 739
2000-07-31 08:58:26 C 01 54 51.65 +11 03 09.7 17.6 c 704
2000-07-31 09:15:46 C 01 54 56.50 +11 03 55.1 17.5 c 704
2000-07-31 09:33:05 C 01 55 01.31 +11 04 40.2 17.8 c 704
2000-07-31 09:50:25 C 01 55 06.10 +11 05 25.4 18.0 c 704
2000-07-31 10:07:45 C 01 55 10.91 +11 06 10.4 17.9 c 704
2000-08-02 00:03:49 C 02 06 20.20 +12 47 32.7 z 151
2000-08-02 00:05:36 C 02 06 20.79 +12 47 36.5 z 151
2000-08-02 00:10:21 C 02 06 22.12 +12 47 51.2 z 151
2000-08-02 00:20:09 C 02 06 25.25 +12 48 16.0 z 151
2000-08-02 00:21:08 C 02 06 25.64 +12 48 20.5 z 151
2000-08-02 00:25:11 C 02 06 26.84 +12 48 32.8 z 151
2000-08-02 10:17:01 C 02 09 28.91 +13 15 53.9 z 711
2000-08-02 10:22:24 C 02 09 30.55 +13 16 08.6 z 711
2000-08-02 10:28:03 C 02 09 32.28 +13 16 25.1 z 711
2000-08-06 09:22:49 C 02 42 09.69 +17 53 26.0 17.5 c 704
2000-08-06 09:43:11 C 02 42 17.25 +17 54 28.4 17.5 c 704
2000-08-06 10:24:15 C 02 42 32.53 +17 56 33.1 17.6 c 704
2000-08-06 10:44:35 C 02 42 40.02 +17 57 36.8 18.3 c 704
2000-08-08 07:59:23 C 03 00 34.31 +20 16 50.2 860
2000-08-08 08:00:43 C 03 00 34.89 +20 16 54.2 860
2000-08-08 08:02:04 C 03 00 35.36 +20 16 56.2 860
2001-06-26 10:00:09 C 21 23 02.81 -30 41 27.5 711
2001-06-26 10:10:37 C 21 23 02.35 -30 41 31.4 711
2001-06-26 10:21:08 C 21 23 01.85 -30 41 35.4 711
2001-07-13 07:26:55 C 20 49 37.05 -33 41 27.8 16.8 c 644
2001-07-13 07:42:12 C 20 49 34.98 -33 41 34.9 16.9 c 644
2001-07-13 07:57:37 C 20 49 32.90 -33 41 42.3 17.2 c 644
2002-07-31 11:04:19 C 16 45 33.02 -35 04 35.6 c 474
2002-07-31 11:10:09 C 16 45 32.58 -35 04 31.4 c 474
2002-07-31 11:21:00 C 16 45 32.18 -35 04 23.5 c 474
2002-07-31 11:30:00 C 16 45 31.73 -35 04 18.1 c 474
2003-05-04 05:56:28 C 18 24 44.35 -45 02 07.3 m 859
2003-05-04 06:02:52 C 18 24 43.74 -45 02 11.2 m 859
2003-05-04 06:08:15 C 18 24 43.28 -45 02 15.2 m 859
2003-06-08 14:14:50 C 16 20 33.20 -45 24 24.6 c E14
2003-06-08 14:25:02 C 16 20 31.52 -45 24 18.4 c E14
2003-06-08 14:35:13 C 16 20 29.90 -45 24 10.7 c E14
2004-03-24 16:24:09 C 20 15 09.86 -52 16 43.6 r D85
2004-03-24 16:26:34 C 20 15 09.28 -52 16 48.3 r D85
2004-03-24 16:27:23 C 20 15 09.07 -52 16 53.0 r D85
2004-05-02 01:51:23 C 13 50 54.93 -54 02 21.9 r 859
2004-05-02 01:52:56 C 13 50 54.63 -54 02 18.1 r 859
2004-05-02 01:54:26 C 13 50 54.31 -54 02 14.8 r 859
2004-05-14 11:10:39 C 13 15 54.36 -44 19 47.0 r E17
2004-05-14 11:16:38 C 13 15 53.95 -44 19 36.6 r E17
2004-05-14 11:24:25 C 13 15 53.38 -44 19 22.6 r E17
2004-05-30 12:14:00 C 13 07 26.62 -35 15 58.4 r E17
2004-05-30 12:18:18 C 13 07 26.63 -35 15 53.9 r E17
Radar Observations (27)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1989-08-19 06:23:00 223401 2 Hz 2380 -1 -1
1989-08-19 07:04:00 59512323 10 us 2380 -1 -1
1989-08-19 07:14:00 59456416 10 us 2380 -1 -1
1989-08-19 07:23:00 59406173 10 us 2380 -1 -1
1989-08-19.265972 22340100 200 Hz 2380 251 251
1989-08-19.294444 5951232300 10000 us 2380 251 251
1989-08-19.301389 5945641600 10000 us 2380 251 251
1989-08-19.307639 5940617300 10000 us 2380 251 251
1989-08-20 05:42:00 215029 2 Hz 2380 -1 -1
1989-08-20 07:16:00 211450 1 Hz 2380 -1 -1
1989-08-20.237500 21502900 200 Hz 2380 251 251
1989-08-20.302778 21145000 100 Hz 2380 251 251
1989-08-21 06:14:00 44374924 3 us 2380 -1 -1
1989-08-21 06:18:00 44354892 3 us 2380 -1 -1
1989-08-21 06:59:00 196833 2 Hz 2380 -1 -1
1989-08-21 07:24:00 195785 1 Hz 2380 -1 -1
1989-08-21.259722 4437492400 3000 us 2380 251 251
1989-08-21.262500 4435489200 3000 us 2380 251 251
1989-08-21.290972 19683300 200 Hz 2380 251 251
1989-08-21.308333 19578500 100 Hz 2380 251 251
1989-08-22 06:45:00 37453066.9 0.3 us 2380 -1 -1
1989-08-22 07:06:00 37361686 2 us 2380 -1 -1
1989-08-22.281250 3745306690 300 us 2380 251 251
1989-08-22.295833 3736168600 2000 us 2380 251 251
1989-08-30 19:35:00 -785297 8 Hz 8495 -14 -14
1989-08-30.815972 -78529700 800 Hz 8495 253 253
2012-09-14 19:40:00 160720139.48 2 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)