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22781 (1999 GN4)
Classification: Main-belt Asteroid          SPK-ID: 2022781
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08842577092198925 3.1179e-08  
a 2.251915856248754 7.8475e-09 au
q 2.052788460608507 7.2008e-08 au
i 5.400282021738669 3.2588e-06 deg
node 90.77275827965424 3.57e-05 deg
peri 344.3557756058345 4.0729e-05 deg
M 274.3632561001257 1.9968e-05 deg
tp 2459494.119105002177
(2021-Oct-06.61910500)		 6.9017e-05 TDB
period 1234.316871323023
3.38		 6.452e-06
1.766e-08		 d
yr
n .2916593043195854 1.5246e-09 deg/d
Q 2.451043251889002 8.5414e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1894  
   data-arc span      10468 days (28.66 yr)  
   first obs. used      1992-03-10  
   last obs. used      2020-11-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47964  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:13:03  

Additional Information
 Earth MOID = 1.06812 au 
 Jupiter MOID = 2.72794 au 
 T_jup = 3.615 
[ 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 14.96   n/a E2021B10  
diameter diameter 3.403 km 0.212 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.265   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22781 (1999 GN4)          Discovered 1999-Apr-10 by Korlevic, K. at Visnjan
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 GN4 = 1992 EJ1 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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