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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1686740028356218 4.9353e-08  
a 2.367915049579815 9.8259e-09 au
q 1.968509339792478 1.1636e-07 au
i 2.003449632731635 5.1242e-06 deg
node 322.1028912898482 0.00012511 deg
peri 63.61853800494814 0.00012618 deg
M 185.6266745202837 1.3822e-05 deg
tp 2459645.151730466976
(2022-Mar-06.65173047)
5.2066e-05 TDB
period 1330.906675832749
3.64
8.2841e-06
2.268e-08
d
yr
n .2704922941157748 1.6837e-09 deg/d
Q 2.767320759367152 1.1483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      878  
   data-arc span      8424 days (23.06 yr)  
   first obs. used      1997-01-05  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59849  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:34:42  

Additional Information
 Earth MOID = .973492 au 
 Jupiter MOID = 2.68868 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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