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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1633870977085289 4.5877e-08  
a 3.11511138707048 1.6942e-08 au
q 2.606142378498245 1.4476e-07 au
i .9440348929448661 4.3786e-06 deg
node 31.54725917633195 0.00026639 deg
peri 320.4810392034767 0.00026658 deg
M 8.319344479487324 1.1692e-05 deg
tp 2458954.091727330551
(2020-Apr-14.59172733)
6.5074e-05 TDB
period 2008.208483516368
5.50
1.6383e-05
4.485e-08
d
yr
n .1792642561541424 1.4625e-09 deg/d
Q 3.624080395642716 1.9711e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2109  
   data-arc span      15785 days (43.22 yr)  
   first obs. used      1976-09-24  
   last obs. used      2019-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51501  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 20:39:17  

Additional Information
 Earth MOID = 1.60074 au 
 Jupiter MOID = 1.80925 au 
 T_jup = 3.197 
[ 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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