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120459 (1990 SQ6)
Classification: Main-belt Asteroid          SPK-ID: 2120459
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1950297345284012 5.0775e-08  
a 2.385226984225292 1.4737e-08 au
q 1.920036798701855 1.2145e-07 au
i 4.429059351479912 5.1873e-06 deg
node 144.9050297879962 6.8923e-05 deg
peri 203.4418540773686 7.0033e-05 deg
M 30.16146740771454 1.5513e-05 deg
tp 2458887.769102701227
(2020-Feb-08.26910270)
5.7258e-05 TDB
period 1345.528799344097
3.68
1.247e-05
3.414e-08
d
yr
n .2675528016758085 2.4796e-09 deg/d
Q 2.85041716974873 1.7611e-08 au
  Orbit Determination Parameters
   # obs. used (total)      325  
   data-arc span      10046 days (27.50 yr)  
   first obs. used      1990-09-15  
   last obs. used      2018-03-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59392  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 04:42:39  

Additional Information
 Earth MOID = .914252 au 
 Jupiter MOID = 2.57027 au 
 T_jup = 3.506 
[ 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 16.6   n/a MPO475058  
diameter diameter 2.768 km 0.825 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120459 (1990 SQ6)          Discovered 1990-Sep-22 by Elst, E. W. at La Silla
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1990 SQ6 = 2001 QN215 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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