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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1886628989030914 7.4101e-08  
a 2.593000985659951 2.3277e-08 AU
q 2.103797902846771 1.9701e-07 AU
i 14.12635294754741 6.3643e-06 deg
node 112.834547879924 3.0638e-05 deg
peri 270.7461221101622 3.4397e-05 deg
M 275.5359143829854 1.7195e-05 deg
tp 2457358.326115439472
(2015-Dec-01.82611544)
7.4229e-05 JED
period 1525.114498276895
4.18
2.0536e-05
5.622e-08
d
yr
n .2360478511001864 3.1784e-09 deg/d
Q 3.082204068473131 2.7668e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      991  
   data-arc span      9029 days (24.72 yr)  
   first obs. used      1990-09-26  
   last obs. used      2015-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50913  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:02:13  

Additional Information
 Earth MOID = 1.16292 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
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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