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4137 Crabtree (1970 WC)
Classification: Main-belt Asteroid          SPK-ID: 2004137
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01763845445600666 5.7747e-08  
a 2.364489669427843 1.3089e-08 au
q 2.322783726081942 1.3887e-07 au
i 3.800648509048781 6.5957e-06 deg
node 352.9209251193012 7.0127e-05 deg
peri 211.8926445071901 0.00017615 deg
M 358.2855086487275 0.00016441 deg
tp 2457406.824662510277
(2016-Jan-19.32466251)
0.00060649 JED
period 1328.019824661005
3.64
1.1027e-05
3.019e-08
d
yr
n .2710802906062754 2.2509e-09 deg/d
Q 2.406195612773744 1.332e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1417  
   data-arc span      22220 days (60.84 yr)  
   first obs. used      1954-05-23  
   last obs. used      2015-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .44808  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:46:33  

Additional Information
 Earth MOID = 1.31815 au 
 Jupiter MOID = 2.55593 au 
 T_jup = 3.546 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a MPO337286  

4137 Crabtree           Discovered 1970 Nov. 24 by L. Kohoutek at Bergedorf.
William Crabtree (1610-1644), a cloth merchant in Salford, near Manchester, became the second person knowingly to observe a transit of Venus, after he had been alerted to the 1639 event by Jeremiah Horrocks.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

[ show close-approach data ]
Alternate Designations
 1970 WC = 1972 GK1 = 1977 RO6 = 1986 AV1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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