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3777 McCauley (1981 JD2)
Classification: Main-belt Asteroid          SPK-ID: 2003777
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1617024567854244 2.0622e-08  
a 2.27679588406397 5.8336e-09 au
q 1.908632396011884 4.8649e-08 au
i 4.189542704550613 6.3275e-07 deg
node 46.4807990902375 8.0627e-06 deg
peri 300.3808385047599 7.64e-06 deg
M 83.9005286226742 3.9688e-06 deg
tp 2458908.053269966998
(2020-Feb-28.55326997)
1.3302e-05 TDB
period 1254.829076052193
3.44
4.8227e-06
1.32e-08
d
yr
n .2868916626737666 1.1026e-09 deg/d
Q 2.644959372116057 6.777e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2756  
   data-arc span      14592 days (39.95 yr)  
   first obs. used      1981-04-11  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44005  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:11:43  

Additional Information
 Earth MOID = .904348 au 
 Jupiter MOID = 2.76777 au 
 T_jup = 3.587 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.30   n/a MPCxxxxx  

3777 McCauley (1981 JD2)          Discovered 1981-May-05 by Shoemaker, C. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 JD2 = 1982 WG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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