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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03104952868412089 1.3497e-08  
a 2.376323399467404 6.6295e-09 au
q 2.302539677912893 3.1931e-08 au
i 2.401464212095075 4.8217e-07 deg
node 26.17637023918904 7.4638e-06 deg
peri 59.2422951200552 3.7202e-05 deg
M 202.3912563056165 3.4903e-05 deg
tp 2459786.280014053806
(2022-Jul-25.78001405)
0.00013032 TDB
period 1338.00194149308
3.66
5.5992e-06
1.533e-08
d
yr
n .2690579055500286 1.1259e-09 deg/d
Q 2.450107121021914 6.8353e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2816  
   data-arc span      30263 days (82.86 yr)  
   first obs. used      1937-11-07  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43695  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:43:07  

Additional Information
 Earth MOID = 1.31918 au 
 Jupiter MOID = 2.58962 au 
 T_jup = 3.539 
[ 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 13.20   n/a E2021B10  
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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