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1940 Whipple (1975 CA)
Classification: Main-belt Asteroid          SPK-ID: 2001940
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06113257534251876 3.4998e-08  
a 3.067785129882967 1.4198e-08 au
q 2.880243524295738 1.0428e-07 au
i 6.553729436800038 3.9456e-06 deg
node 263.7844382956047 3.235e-05 deg
peri 181.5257569300014 4.5761e-05 deg
M 200.7453784290341 3.3574e-05 deg
tp 2459868.711187133233
(2022-Oct-16.21118713)
0.00018535 TDB
period 1962.618254244414
5.37
1.3625e-05
3.73e-08
d
yr
n .183428437609532 1.2734e-09 deg/d
Q 3.255326735470196 1.5066e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3701  
   data-arc span      21183 days (58.00 yr)  
   first obs. used      1962-09-22  
   last obs. used      2020-09-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37942  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:36:35  

Additional Information
 Earth MOID = 1.89642 au 
 Jupiter MOID = 1.92352 au 
 T_jup = 3.219 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.2   n/a MPO492773  
diameter diameter 37.481 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.953 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Durkee, R.I. (2012) Minor Planet Bull. 39, 92-93.]
geometric albedo albedo 0.060   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1940 Whipple (1975 CA)          Discovered 1975-Feb-02 by Harvard College at Agassiz Station
Discovered at Oak Ridge Observatory (until 1981 Harvard College's Agassiz Station). The principal observers are R. E. McCrosky, C.-Y. Shao, G. Schwartz, and J. H. Bulger, with some assistance from others.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1975 CA = 1932 AD = 1950 LH = 1962 SH = 1970 EC1 = 1971 KD1 = 1971 KN = A916 AD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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