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JPL Small-Body Database Browser
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13685 (1997 QG4)
Classification: Main-belt Asteroid          SPK-ID: 2013685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1385981269131923 3.7682e-08  
a 2.993812242042482 1.8725e-08 au
q 2.578875472965609 1.1242e-07 au
i 12.20075426808978 5.9653e-06 deg
node 147.7523247579037 2.0544e-05 deg
peri 117.1087502074227 3.0323e-05 deg
M 132.1697562358478 2.3486e-05 deg
tp 2457905.851895437282
(2017-Jun-01.35189544)
0.00012089 TDB
period 1892.061578719566
5.18
1.7751e-05
4.86e-08
d
yr
n .190268648784479 1.7851e-09 deg/d
Q 3.408749011119355 2.1321e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1385  
   data-arc span      10437 days (28.57 yr)  
   first obs. used      1991-05-11  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52622  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:37:22  

Additional Information
 Earth MOID = 1.59013 au 
 Jupiter MOID = 1.85559 au 
 T_jup = 3.207 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO458954  
diameter diameter 8.038 km 0.339 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.207   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13685 (1997 QG4)          Discovered 1997-Aug-27 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 QG4 = 1991 JR1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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