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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2790284341217171 5.2256e-08  
a 2.625178699006494 1.5832e-08 au
q 1.892679197333025 1.4164e-07 au
i 12.2247735444014 6.0568e-06 deg
node 11.53470201276573 2.175e-05 deg
peri 313.7957704294538 2.3219e-05 deg
M 309.8276886650015 9.9355e-06 deg
tp 2459217.020161408406
(2021-Jan-02.52016141)
4.4002e-05 TDB
period 1553.591134890628
4.25
1.4054e-05
3.848e-08
d
yr
n .2317211986571639 2.0962e-09 deg/d
Q 3.357678200679962 2.025e-08 au
  Orbit Determination Parameters
   # obs. used (total)      690  
   data-arc span      15234 days (41.71 yr)  
   first obs. used      1978-10-02  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55098  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:02:29  

Additional Information
 Earth MOID = .904691 au 
 Jupiter MOID = 2.09892 au 
 T_jup = 3.315 
[ 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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