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3912 Troja (1988 SG)
Classification: Main-belt Asteroid          SPK-ID: 2003912
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03152639238024304 2.8298e-08  
a 2.375260720883395 7.2194e-09 au
q 2.300377319391446 6.6854e-08 au
i 2.401933135162086 3.5884e-06 deg
node 26.1962030605938 6.7683e-05 deg
peri 59.07063912395471 9.0659e-05 deg
M 148.7202796563748 6.1511e-05 deg
tp 2458448.126226830986
(2018-Nov-25.62622683)
0.0002274 TDB
period 1337.104521322229
3.66
6.096e-06
1.669e-08
d
yr
n .269238488285123 1.2275e-09 deg/d
Q 2.450144122375344 7.447e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2792  
   data-arc span      30263 days (82.86 yr)  
   first obs. used      1937-11-07  
   last obs. used      2020-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43612  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:56:04  

Additional Information
 Earth MOID = 1.31741 au 
 Jupiter MOID = 2.59184 au 
 T_jup = 3.540 
[ 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 13.1   n/a MPO431542  
diameter diameter 5.930 km 0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.328   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3912 Troja (1988 SG)          Discovered 1988-Sep-16 by Elst, E. W. at Haute Provence
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1988 SG = 1937 VJ = 1970 SZ = 1970 WK = 1977 RE9 = 1981 UC14 = 1985 XD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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