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JPL Small-Body Database Browser
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56296 (1999 RU39)
Classification: Main-belt Asteroid          SPK-ID: 2056296
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2440010239355507 4.2824e-08  
a 2.358568048684942 8.666e-09 au
q 1.783075029784143 1.0341e-07 au
i 6.385471365108563 4.0498e-06 deg
node 265.2256226578438 4.5095e-05 deg
peri 106.167691272374 4.6065e-05 deg
M 130.5221696912222 1.0993e-05 deg
tp 2458120.818657142906
(2018-Jan-02.31865714)
3.8954e-05 TDB
period 1323.03411625073
3.62
7.2917e-06
1.996e-08
d
yr
n .2721018268373783 1.4997e-09 deg/d
Q 2.934061067585742 1.078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1260  
   data-arc span      13728 days (37.59 yr)  
   first obs. used      1981-09-27  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51629  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:24:20  

Additional Information
 Earth MOID = .795507 au 
 Jupiter MOID = 2.57808 au 
 T_jup = 3.504 
[ 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 14.6   n/a MPO436176  
diameter diameter 2.823 km 0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.287   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

56296 (1999 RU39)          Discovered 1999-Sep-07 by CSS at Catalina
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RU39 = 1981 SA3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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