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37770 (1997 GQ21)
Classification: Main-belt Asteroid          SPK-ID: 2037770
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07376479649896747 6.1442e-08  
a 3.198518018592447 2.7302e-08 au
q 2.962579987852694 2.0335e-07 au
i 4.716244126310274 6.2893e-06 deg
node 207.6482380815391 6.5121e-05 deg
peri 344.5478725806834 7.4615e-05 deg
M 33.71744338803197 3.6848e-05 deg
tp 2458804.807687414308
(2019-Nov-17.30768741)
0.00021363 TDB
period 2089.400187318332
5.72
2.6752e-05
7.324e-08
d
yr
n .1722982519983626 2.206e-09 deg/d
Q 3.434456049332199 2.9316e-08 au
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      8074 days (22.11 yr)  
   first obs. used      1997-04-06  
   last obs. used      2019-05-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60996  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 04:37:57  

Additional Information
 Earth MOID = 1.96223 au 
 Jupiter MOID = 1.52979 au 
 T_jup = 3.185 
[ 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 14.6   n/a MPO474233  
diameter diameter 4.683 km 1.311 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.128   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37770 (1997 GQ21)          Discovered 1997-Apr-06 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 GQ21 = 1999 TO157 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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