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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138468950800384 3.7263e-08  
a 2.994273675901644 1.8436e-08 au
q 2.579659741590334 1.1132e-07 au
i 12.20188316998746 5.4086e-06 deg
node 147.7368638157442 1.9576e-05 deg
peri 117.2386514712785 2.8548e-05 deg
M 208.1207790599532 2.2897e-05 deg
tp 2459798.920216865551
(2022-Aug-07.42021687)
0.00012422 TDB
period 1892.499028455377
5.18
1.7479e-05
4.785e-08
d
yr
n .1902246683285356 1.7569e-09 deg/d
Q 3.408887610212954 2.0989e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1524  
   data-arc span      10757 days (29.45 yr)  
   first obs. used      1991-05-11  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51292  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:44:46  

Additional Information
 Earth MOID = 1.59129 au 
 Jupiter MOID = 1.85613 au 
 T_jup = 3.206 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456818.5 (2014-Jun-10.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1418793367207167 3.7307e-08  
q 2.565743460724512 1.1162e-07 au
tp 2456015.255701169493
(2012-Mar-28.75570117)
0.00010638 TDB
node 147.8065890930174 1.9569e-05 deg
peri 117.0357176822871 2.8207e-05 deg
i 12.20951898659908 5.4125e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1524  
   data-arc span      10757 days (29.45 yr)  
   first obs. used      1991-05-11  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51292  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:44:46  

Additional Information
 Jupiter MOID = 1.85613 au 
 T_jup = 3.206 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.391799560285249E-15 -4.123546767558725E-15 4.448705509298187E-13 -6.89419232122481E-16 1.131497315005264E-13 5.252370306802123E-16
q -4.123546767558725E-15 1.245802303888617E-14 -8.559679265142288E-13 2.50255659363178E-15 -2.325049699284294E-13 -1.335508793932066E-15
tp 4.448705509298187E-13 -8.559679265142288E-13 1.131724892362728E-8 -1.018680283635095E-11 2.174533986159241E-9 -1.586556973901338E-12
node -6.89419232122481E-16 2.50255659363178E-15 -1.018680283635095E-11 3.829345502751768E-10 -3.758406168008747E-10 1.266445246434522E-11
peri 1.131497315005264E-13 -2.325049699284294E-13 2.174533986159241E-9 -3.758406168008747E-10 7.95633457709948E-10 -1.267715568739818E-11
i 5.252370306802123E-16 -1.335508793932066E-15 -1.586556973901338E-12 1.266445246434522E-11 -1.267715568739818E-11 2.92953679365314E-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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