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193861 (2001 QD137)
Classification: Main-belt Asteroid          SPK-ID: 2193861
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1701201572230943 4.5942e-08  
a 2.377247527823734 1.0682e-08 au
q 1.972829804632148 1.1208e-07 au
i 10.7409066544061 5.0605e-06 deg
node 221.6718706886622 2.4878e-05 deg
peri 218.004829552688 3.1222e-05 deg
M 349.5848353243882 2.2226e-05 deg
tp 2459039.232334493952
(2020-Jul-08.73233449)
8.2802e-05 TDB
period 1338.782520690541
3.67
9.0234e-06
2.47e-08
d
yr
n .2689010309264516 1.8124e-09 deg/d
Q 2.78166525101532 1.2499e-08 au
  Orbit Determination Parameters
   # obs. used (total)      557  
   data-arc span      10954 days (29.99 yr)  
   first obs. used      1990-10-26  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57905  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 06:25:07  

Additional Information
 Earth MOID = .998802 au 
 Jupiter MOID = 2.52978 au 
 T_jup = 3.498 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457592.5 (2016-Jul-23.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1689091417510747 4.5839e-08  
q 1.97613601408219 1.1181e-07 au
tp 2457698.186712237339
(2016-Nov-05.68671224)
7.8812e-05 TDB
node 221.6927519621881 2.4863e-05 deg
peri 217.5550791761788 3.1333e-05 deg
i 10.74115460082388 5.0643e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      557  
   data-arc span      10954 days (29.99 yr)  
   first obs. used      1990-10-26  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57905  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 06:25:07  

Additional Information
 Jupiter MOID = 2.52978 au 
 T_jup = 3.498 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.10121893279265E-15 -5.110212411545264E-15 -1.503654870017055E-12 5.573826746503645E-15 -2.877796318230311E-13 -2.651401358585738E-15
q -5.110212411545264E-15 1.25021878274307E-14 3.92556735609776E-12 -1.357738786580467E-14 7.632778183779977E-13 7.710073734596038E-15
tp -1.503654870017055E-12 3.92556735609776E-12 6.211288001585797E-9 2.984656249274188E-13 1.516061626200299E-9 1.52839224342129E-11
node 5.573826746503645E-15 -1.357738786580467E-14 2.984656249274188E-13 6.181919427291181E-10 -6.067650930432768E-10 -3.516221475717147E-11
peri -2.877796318230311E-13 7.632778183779977E-13 1.516061626200299E-9 -6.067650930432768E-10 9.817737305845018E-10 3.831254926094015E-11
i -2.651401358585738E-15 7.710073734596038E-15 1.52839224342129E-11 -3.516221475717147E-11 3.831254926094015E-11 2.564708066306231E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO494073  
diameter diameter 2.274 km 0.619 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.236   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

193861 (2001 QD137)          Discovered 2001-Aug-22 by LINEAR at Socorro
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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