4769 Castalia help
Last update: 2025-07-30 13:15 UTC
Observational Information
  • Arc Length
  • Unobserved
  • Normalized RMS of residuals
Arc Information
Value
Unit
Source
Arc Length
Value
13146
Unit
d
Source
[1]
Unobserved
Value
18
Unit
d
Source
[1]
Normalized RMS of residuals
Value
0.482446
Unit
-
Source
[1]
Astrometry Summary
  • First Observation
  • Last Observation
  • Total Optical Observations (Discarded)
Optical
Value
Unit
Source
First Observation
Value
1989-08-01.44844
Unit
-
Source
[2]
Last Observation
Value
2025-07-29.062368
Unit
-
Source
[2]
Total Optical Observations (Discarded)
Value
654 (3)
Unit
-
Source
[1]
Radar Summary
  • First Observation
  • Last Observation
  • Delay (Discarded)
  • Doppler (Discarded)
  • Total Optical Observations (Discarded)
Radar
Value
Unit
Source
First Observation
Value
1989-08-19
Unit
-
Source
[3]
Last Observation
Value
2012-09-14
Unit
-
Source
[3]
Delay (Discarded)
Value
8 (0)
Unit
-
Source
[1]
Doppler (Discarded)
Value
6 (0)
Unit
-
Source
[1]
Total Radar Observations (Discarded)
Value
14 (0)
Unit
-
Source
[1]
Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.NameAdditional
[1]ESA AegisESA orbit determination and impact monitoring system
[2]MPCMinor Planet Center: https://www.minorplanetcenter.net
[3]JPL Radar ObservationsJet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt