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7513 (1985 RU2)
Classification: Main-belt Asteroid          SPK-ID: 2007513
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1588426086211233 3.0578e-08  
a 2.239327727324042 6.211e-09 au
q 1.88362706955828 6.8921e-08 au
i 2.659450871677896 3.6011e-06 deg
node 16.73622696187607 7.725e-05 deg
peri 8.872242046054126 7.8193e-05 deg
M 152.619306129575 1.2575e-05 deg
tp 2458681.602130956015
(2019-Jul-17.10213096)
4.1941e-05 TDB
period 1223.981667805757
3.35
5.0922e-06
1.394e-08
d
yr
n .2941220522080002 1.2237e-09 deg/d
Q 2.595028385089804 7.1975e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1845  
   data-arc span      25927 days (70.98 yr)  
   first obs. used      1950-03-21  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5053  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:47:10  

Additional Information
 Earth MOID = .886352 au 
 Jupiter MOID = 2.85534 au 
 T_jup = 3.618 
[ 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 14.48   n/a E2021B10  
diameter diameter 2.448 km 0.407 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.562   0.205 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7513 (1985 RU2)          Discovered 1985-Sep-05 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 RU2 = 1955 SH = 1955 UU1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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