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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1384689490589509 3.7578e-08  
a 2.994273674819497 1.8673e-08 au
q 2.579659745872358 1.1199e-07 au
i 12.20188333067037 5.4844e-06 deg
node 147.7368649780227 2.0059e-05 deg
peri 117.2386511346357 2.9017e-05 deg
M 208.1207786807305 2.2972e-05 deg
tp 2459798.920218426272
(2022-Aug-07.42021843)
0.00012456 TDB
period 1892.499027429438
5.18
1.7703e-05
4.847e-08
d
yr
n .190224668431658 1.7794e-09 deg/d
Q 3.408887603766636 2.1258e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      10489 days (28.72 yr)  
   first obs. used      1991-05-11  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51904  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:43:11  

Additional Information
 Earth MOID = 1.59129 au 
 Jupiter MOID = 1.85613 au 
 T_jup = 3.206 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456655.5 (2013-Dec-29.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1420309790695071 3.7652e-08  
q 2.565070359397411 1.1243e-07 au
tp 2456015.471543019618
(2012-Mar-28.97154302)
0.00010692 TDB
node 147.810878846829 2.0052e-05 deg
peri 117.0415040284028 2.8647e-05 deg
i 12.20955648043122 5.4881e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      10489 days (28.72 yr)  
   first obs. used      1991-05-11  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51904  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:43:11  

Additional Information
 Jupiter MOID = 1.85613 au 
 T_jup = 3.206 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.417652142306453E-15 -4.191903710977149E-15 4.259865284172359E-13 -1.183224651968479E-15 1.087748732832807E-13 4.38835491440306E-16
q -4.191903710977149E-15 1.264067650658332E-14 -8.348103045852902E-13 4.023605836479998E-15 -2.274468917435894E-13 -8.966926524195763E-16
tp 4.259865284172359E-13 -8.348103045852902E-13 1.143139246521215E-8 -1.349915852456769E-11 2.202835192608324E-9 -2.229952187985339E-12
node -1.183224651968479E-15 4.023605836479998E-15 -1.349915852456769E-11 4.020964170368287E-10 -3.951985631196573E-10 1.622673687345547E-11
peri 1.087748732832807E-13 -2.274468917435894E-13 2.202835192608324E-9 -3.951985631196573E-10 8.20639473892749E-10 -1.627285525778092E-11
i 4.38835491440306E-16 -8.966926524195763E-16 -2.229952187985339E-12 1.622673687345547E-11 -1.627285525778092E-11 3.011974805553958E-11

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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