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JPL Small-Body Database Browser
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3148 Grechko (1979 SA12)
Classification: Main-belt Asteroid          SPK-ID: 2003148
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1922595058808164 3.0764e-08  
a 3.100425204703665 1.2633e-08 au
q 2.504338986826909 9.4967e-08 au
i .7333316931661326 4.4236e-06 deg
node .8218287212090682 0.00023955 deg
peri 43.58876357177681 0.00023977 deg
M 136.9357727627688 1.0568e-05 deg
tp 2458242.018956125417
(2018-May-03.51895613)
5.7045e-05 TDB
period 1994.023696553671
5.46
1.2187e-05
3.337e-08
d
yr
n .1805394793563379 1.1034e-09 deg/d
Q 3.696511422580421 1.5062e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2645  
   data-arc span      20555 days (56.28 yr)  
   first obs. used      1964-01-18  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44507  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:49:55  

Additional Information
 Earth MOID = 1.51358 au 
 Jupiter MOID = 1.7117 au 
 T_jup = 3.193 
[ 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 12.3   n/a MPO337275  
diameter diameter 17.009 km 0.457 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.983 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.069   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3148 Grechko (1979 SA12)          Discovered 1979-Sep-24 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1979 SA12 = 1964 BE = 1973 QV1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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