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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1887805071641556 8.0591e-08  
a 2.592689482631357 2.5089e-08 AU
q 2.103240247181037 2.123e-07 AU
i 14.12636619719889 7.3581e-06 deg
node 112.8347827185604 3.4002e-05 deg
peri 270.7748196746455 3.9217e-05 deg
M 228.3000810525456 1.9667e-05 deg
tp 2457358.336840861637
(2015-Dec-01.83684086)
8.4981e-05 JED
period 1524.839683388971
4.17
2.2134e-05
6.06e-08
d
yr
n .2360903929256986 3.4269e-09 deg/d
Q 3.082138718081677 2.9826e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      910  
   data-arc span      8598 days (23.54 yr)  
   first obs. used      1990-09-26  
   last obs. used      2014-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54312  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:56:40  

Additional Information
 Earth MOID = 1.16131 AU 
 T_jup = 3.351 
[ 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 12.6 mag n/a MPO263433  

9442 (1997 GQ27)          Discovered 1997-Apr-02 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
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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