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9442 (1997 GQ27)
Classification: Main-belt Asteroid          SPK-ID: 2009442
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1883776151120972 7.1305e-08  
a 2.592443356170757 2.0059e-08 au
q 2.104085059422109 1.9186e-07 au
i 14.12589099998748 5.1384e-06 deg
node 112.8293002859755 2.7795e-05 deg
peri 270.7067841513078 3.1135e-05 deg
M 57.20854347772163 1.3003e-05 deg
tp 2457358.218233805949
(2015-Dec-01.71823381)
5.5051e-05 JED
period 1524.622556835838
4.17
1.7695e-05
4.845e-08
d
yr
n .2361240153413016 2.7404e-09 deg/d
Q 3.080801652919406 2.3837e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1172  
   data-arc span      9267 days (25.37 yr)  
   first obs. used      1990-09-26  
   last obs. used      2016-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49945  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:03:23  

Additional Information
 Earth MOID = 1.16211 au 
 Jupiter MOID = 2.52778 au 
 T_jup = 3.352 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO358722  

9442 (1997 GQ27)          Discovered 1997-Apr-02 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 19981005/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 GQ27 = 1990 SA21 = 1995 YU25 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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