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JPL Small-Body Database Browser
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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 | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01178288376921141 3.2706e-08  
a 2.783671246361513 1.1632e-08 au
q 2.750871571613939 9.0483e-08 au
i 3.198525524815379 3.6641e-06 deg
node 270.0044365472191 6.4177e-05 deg
peri 317.0492646783492 0.00017709 deg
M 243.8780901984119 0.00016629 deg
tp 2459547.688562628361
(2021-Nov-29.18856263)
0.00078421 TDB
period 1696.388587500788
4.64
1.0633e-05
2.911e-08
d
yr
n .2122155281239964 1.3301e-09 deg/d
Q 2.816470921109086 1.1769e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2651  
   data-arc span      25194 days (68.98 yr)  
   first obs. used      1951-02-10  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44934  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:29:12  

Additional Information
 Earth MOID = 1.73968 au 
 Jupiter MOID = 2.16184 au 
 T_jup = 3.330 
[ 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 12.6   n/a MPO358679  
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. 2019-August); 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

[ show close-approach data ]
Alternate Designations
 1981 SD4 = 1973 YO3 = 1977 UA2 = 1979 FF1 = 1990 OS3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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