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39775 (1997 GB30)
Classification: Main-belt Asteroid          SPK-ID: 2039775
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1156870190648535 4.6087e-08  
a 2.761938633797701 1.3968e-08 au
q 2.442418186413591 1.2894e-07 au
i 9.122029773392848 4.1913e-06 deg
node 77.8057224206528 3.0717e-05 deg
peri 159.5010061305298 3.6139e-05 deg
M 341.9554845778772 1.9361e-05 deg
tp 2459084.535383687974
(2020-Aug-23.03538369)
9.015e-05 TDB
period 1676.561404945271
4.59
1.2718e-05
3.482e-08
d
yr
n .2147252101462706 1.6289e-09 deg/d
Q 3.081459081181811 1.5584e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1305  
   data-arc span      8459 days (23.16 yr)  
   first obs. used      1997-04-13  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5488  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:03:11  

Additional Information
 Earth MOID = 1.43225 au 
 Jupiter MOID = 1.93528 au 
 T_jup = 3.313 
[ 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 14.2   n/a MPO436049  
diameter diameter 4.532 km 0.473 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.180   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39775 (1997 GB30)          Discovered 1997-Apr-13 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 GB30 = 1999 VJ194 = 1999 WW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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