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78691 (2002 TQ161)
Classification: Main-belt Asteroid          SPK-ID: 2078691
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1299138875052655 4.3542e-08  
a 2.641423132393156 1.5975e-08 au
q 2.298265584717625 1.141e-07 au
i 14.06932278091106 4.4985e-06 deg
node 95.10992801561001 1.774e-05 deg
peri 142.6118218333314 2.6011e-05 deg
M 182.2636724354323 2.2727e-05 deg
tp 2459774.657086916838
(2022-Jul-14.15708692)
0.00010334 TDB
period 1568.033699744456
4.29
1.4224e-05
3.894e-08
d
yr
n .2295869024107514 2.0827e-09 deg/d
Q 2.984580680068686 1.805e-08 au
  Orbit Determination Parameters
   # obs. used (total)      913  
   data-arc span      7598 days (20.80 yr)  
   first obs. used      2000-01-03  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54048  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:53  

Additional Information
 Earth MOID = 1.29981 au 
 Jupiter MOID = 2.1023 au 
 T_jup = 3.340 
[ 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 14.7   n/a MPO432336  
diameter diameter 3.385 km 0.848 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.322   0.176 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78691 (2002 TQ161)          Discovered 2002-Oct-05 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 TQ161 = 2000 EN116 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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