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39656 (1995 US11)
Classification: Main-belt Asteroid          SPK-ID: 2039656
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2788173190947083 5.7965e-08  
a 2.624561818328 1.6789e-08 au
q 1.892788528343454 1.5452e-07 au
i 12.2253257166596 6.4654e-06 deg
node 11.53938076791242 2.2872e-05 deg
peri 313.8416266466665 2.4215e-05 deg
M 217.0363643842355 1.0258e-05 deg
tp 2459217.246537172323
(2021-Jan-02.74653717)
4.7799e-05 TDB
period 1553.04355842468
4.25
1.4902e-05
4.08e-08
d
yr
n .2318028995691298 2.2243e-09 deg/d
Q 3.356335108312546 2.1471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      621  
   data-arc span      14793 days (40.50 yr)  
   first obs. used      1978-10-02  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58983  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:07:51  

Additional Information
 Earth MOID = .903912 au 
 Jupiter MOID = 2.09686 au 
 T_jup = 3.316 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO436048  
diameter diameter 6.236 km 0.390 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39656 (1995 US11)          Discovered 1995-Oct-17 by Spacewatch at Kitt Peak
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 US11 = 1978 TH8 = 1978 TU6 = 1978 UP5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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