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21308 (1996 XG5)
Classification: Main-belt Asteroid          SPK-ID: 2021308
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1046678694203233 3.2218e-08  
a 2.359927442792639 8.2511e-09 au
q 2.112918865368981 7.595e-08 au
i 3.189309723747639 3.7396e-06 deg
node 61.3610760390339 6.5177e-05 deg
peri 24.11477649453525 6.7853e-05 deg
M 224.9182769189385 1.8592e-05 deg
tp 2459697.367389225385
(2022-Apr-27.86738923)
6.9116e-05 TDB
period 1324.178105233369
3.63
6.9447e-06
1.901e-08
d
yr
n .2718667515927207 1.4258e-09 deg/d
Q 2.606936020216296 9.1147e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1476  
   data-arc span      8650 days (23.68 yr)  
   first obs. used      1996-12-02  
   last obs. used      2020-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48346  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:57:46  

Additional Information
 Earth MOID = 1.12919 au 
 Jupiter MOID = 2.55976 au 
 T_jup = 3.542 
[ 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 15.21   n/a E2021B10  
diameter diameter 2.554 km 0.432 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.297   0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21308 (1996 XG5)          Discovered 1996-Dec-02 by Antolini, P., Castellani, F. at Pleiade
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 XG5 = 1998 KC24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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