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5091 Isakovskij (1981 SD4)
Classification: Main-belt Asteroid          SPK-ID: 2005091
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 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01166211067732029 1.8269e-08  
a 2.783534836581311 1.0264e-08 au
q 2.751072945242923 5.3996e-08 au
i 3.198273825428304 6.9819e-07 deg
node 270.0006118565511 1.0927e-05 deg
peri 317.3729444918043 9.2334e-05 deg
M 285.9881825198055 9.4558e-05 deg
tp 2459549.232149518393
(2021-Nov-30.73214952)
0.00044559 TDB
period 1696.263895427469
4.64
9.3826e-06
2.569e-08
d
yr
n .2122311280517338 1.1739e-09 deg/d
Q 2.815996727919698 1.0384e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3040  
   data-arc span      25609 days (70.11 yr)  
   first obs. used      1951-02-10  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43607  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 22:02:49  

Additional Information
 Earth MOID = 1.73828 au 
 Jupiter MOID = 2.16124 au 
 T_jup = 3.330 
[ 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 12.67   n/a MPCxxxxx  
diameter diameter 14.319 km 3.222 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 13.62 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 [Result based on fragmentary lightcurve(s), may be completely wrong.]
geometric albedo albedo 0.071   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

5091 Isakovskij (1981 SD4)          Discovered 1981-Sep-25 by Chernykh, L. I. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 SD4 = 1973 YO3 = 1977 UA2 = 1979 FF1 = 1990 OS3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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