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JPL Small-Body Database Browser
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6955 Ekaterina (1987 SP15)
Classification: Main-belt Asteroid          SPK-ID: 2006955
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1641930459831813 4.6079e-08  
a 3.118822262807997 1.7637e-08 au
q 2.606733335597394 1.4533e-07 au
i .9442448028527047 4.3967e-06 deg
node 31.61004381488327 0.0002663 deg
peri 320.1678064261615 0.0002665 deg
M 296.9189836058203 1.1389e-05 deg
tp 2458953.017390705040
(2020-Apr-13.51739071)
6.484e-05 TDB
period 2011.797968834307
5.51
1.7065e-05
4.672e-08
d
yr
n .1789444097155512 1.5179e-09 deg/d
Q 3.6309111900186 2.0533e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2079  
   data-arc span      15696 days (42.97 yr)  
   first obs. used      1976-09-24  
   last obs. used      2019-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5125  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 00:56:19  

Additional Information
 Earth MOID = 1.60036 au 
 Jupiter MOID = 1.79829 au 
 T_jup = 3.196 
[ 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 12.4   n/a MPO435765  
diameter diameter 16.049 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6955 Ekaterina (1987 SP15)          Discovered 1987-Sep-25 by Zhuravleva, L. V. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1987 SP15 = 1948 QD = 1976 SC5 = 1989 BK1 = 1992 PU4 = 1994 AZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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