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JPL Small-Body Database Browser
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39742 (1997 AQ7)
Classification: Main-belt Asteroid          SPK-ID: 2039742
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1685240321911887 4.9621e-08  
a 2.368481872711902 1.0028e-08 au
q 1.969335757350754 1.1686e-07 au
i 2.003177772450402 5.1491e-06 deg
node 322.099957561833 0.00012558 deg
peri 63.71014001860615 0.00012675 deg
M 77.34751984896288 1.4066e-05 deg
tp 2458314.446400848155
(2018-Jul-14.94640085)
5.1857e-05 TDB
period 1331.384586031365
3.65
8.4554e-06
2.315e-08
d
yr
n .2703951989357935 1.7172e-09 deg/d
Q 2.767627988073049 1.1718e-08 au
  Orbit Determination Parameters
   # obs. used (total)      870  
   data-arc span      8095 days (22.16 yr)  
   first obs. used      1997-01-05  
   last obs. used      2019-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59566  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:08:15  

Additional Information
 Earth MOID = .973618 au 
 Jupiter MOID = 2.68584 au 
 T_jup = 3.526 
[ 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 15.6   n/a MPO468238  
diameter diameter 4.317 km 0.243 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39742 (1997 AQ7)          Discovered 1997-Jan-05 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 AQ7 = 1999 NH14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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