433953 1997XR2 help
Last update: 2024-04-26 23:50 UTC
Observational Information
  • Arc Length
  • Unobserved
  • Normalized RMS of residuals
Arc Information
Value
Unit
Source
Arc Length
Value
7014
Unit
d
Source
[1]
Unobserved
Value
2627
Unit
d
Source
[1]
Normalized RMS of residuals
Value
0.586606
Unit
-
Source
[1]
Astrometry Summary
  • First Observation
  • Last Observation
  • Total Optical Observations (Discarded)
Optical
Value
Unit
Source
First Observation
Value
1997-12-04.23858
Unit
-
Source
[2]
Last Observation
Value
2017-02-16.18913
Unit
-
Source
[2]
Total Optical Observations (Discarded)
Value
427 (4)
Unit
-
Source
[1]
Radar Summary
  • First Observation
  • Last Observation
  • Delay (Discarded)
  • Doppler (Discarded)
  • Total Optical Observations (Discarded)
Radar
Value
Unit
Source
First Observation
Value
2016-11-16
Unit
-
Source
[3]
Last Observation
Value
2016-12-06
Unit
-
Source
[3]
Delay (Discarded)
Value
6 (0)
Unit
-
Source
[1]
Doppler (Discarded)
Value
2 (0)
Unit
-
Source
[1]
Total Radar Observations (Discarded)
Value
8 (0)
Unit
-
Source
[1]
Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.NameAdditional
[1]ESA ODIMESA 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