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JPL Small-Body Database Browser
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12674 Rybalka (1980 RL2)
Classification: Main-belt Asteroid          SPK-ID: 2012674
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2101825129495779 3.7847e-08  
a 2.399443032982278 7.3869e-09 au
q 1.895122066630706 9.0989e-08 au
i 1.724014750925989 4.0452e-06 deg
node 310.7132355717723 0.00010593 deg
peri 8.714386120000938 0.00010618 deg
M 167.4047049215818 7.146e-06 deg
tp 2457969.209504157977
(2017-Aug-03.70950416)
2.6569e-05 TDB
period 1357.575813711968
3.72
6.2692e-06
1.716e-08
d
yr
n .2651785604633495 1.2246e-09 deg/d
Q 2.90376399933385 8.9395e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1902  
   data-arc span      14335 days (39.25 yr)  
   first obs. used      1980-09-07  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:27:08  

Additional Information
 Earth MOID = .881251 au 
 Jupiter MOID = 2.40451 au 
 T_jup = 3.496 
[ 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 14.0   n/a MPO435821  
diameter diameter 3.668 km 0.287 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.594 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.396   0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

12674 Rybalka           Discovered 1980 Sept. 7 by N. S. Chernykh at the Crimean Astrophysical Observatory.
Anatolij Nikolaevich Rybalka (b. 1939) is an obstetrician and gynaecologist, professor at the Crimean Medical University, a member of several medical societies of Europe, an authoritative expert and teacher who educated many specialists in medicine.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1980 RL2 = 1991 PU15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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