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2792 Ponomarev (1977 EY1)
Classification: Main-belt Asteroid          SPK-ID: 2002792
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 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1285979873730166 1.0538e-08  
a 2.276695274855104 5.8731e-09 au
q 1.983916844647081 2.5575e-08 au
i 9.364895138478905 8.047e-07 deg
node 16.62562512560929 5.2412e-06 deg
peri 72.05165869717764 8.6274e-06 deg
M 346.4911572799151 8.4421e-06 deg
tp 2459247.583791811226
(2021-Feb-02.08379181)
2.9449e-05 TDB
period 1254.745902610871
3.44
4.8552e-06
1.329e-08
d
yr
n .2869106798842006 1.1102e-09 deg/d
Q 2.569473705063127 6.6284e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2981  
   data-arc span      18648 days (51.06 yr)  
   first obs. used      1970-03-04  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36256  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:31:29  

Additional Information
 Earth MOID = 1.02228 au 
 Jupiter MOID = 2.64132 au 
 T_jup = 3.580 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457162.5 (2015-May-20.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284680525798656 1.0517e-08  
q 1.98404989549512 2.55e-08 au
tp 2456735.852026671896
(2014-Mar-19.35202667)
2.9686e-05 TDB
node 16.71742041865479 5.2336e-06 deg
peri 71.44791937398735 8.6441e-06 deg
i 9.37222194673209 8.0522e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2981  
   data-arc span      18648 days (51.06 yr)  
   first obs. used      1970-03-04  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36256  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:31:29  

Additional Information
 Jupiter MOID = 2.64132 au 
 T_jup = 3.580 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.106041469482292E-16 -2.629390200025488E-16 2.426000410219629E-14 -1.968698530740262E-15 2.198954929332787E-15 -1.483290914487468E-15
q -2.629390200025488E-16 6.502255235778114E-16 -8.24370121427388E-14 4.353889058345088E-15 -8.733962105598294E-15 3.401173078101199E-15
tp 2.426000410219629E-14 -8.24370121427388E-14 8.812626285297349E-10 1.2328924112819E-11 2.065229757110385E-10 -1.793191095039905E-12
node -1.968698530740262E-15 4.353889058345088E-15 1.2328924112819E-11 2.739107272281443E-11 -2.332450704353938E-11 1.944934839286943E-13
peri 2.198954929332787E-15 -8.733962105598294E-15 2.065229757110385E-10 -2.332450704353938E-11 7.47204514298161E-11 -6.310887870216888E-13
i -1.483290914487468E-15 3.401173078101199E-15 -1.793191095039905E-12 1.944934839286943E-13 -6.310887870216888E-13 6.483861171746139E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.24   n/a MPCxxxxx  
diameter diameter 11.685 km 2.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 137.566 h n/a LCDB (Rev. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.079   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

2792 Ponomarev (1977 EY1)          Discovered 1977-Mar-13 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1977 EY1 = 1965 WE = 1970 ER3 = 1975 RV1 = 1982 UN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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