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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284703306171112 3.2937e-08  
a 2.276383919639606 7.6723e-09 au
q 1.98393612487203 7.4078e-08 au
i 9.365305052938696 5.1937e-06 deg
node 16.62675071624664 2.2887e-05 deg
peri 72.07066844450731 3.1257e-05 deg
M 289.0755446881914 2.1234e-05 deg
tp 2459247.649763327736
(2021-Feb-02.14976333)
7.4275e-05 TDB
period 1254.488517491249
3.43
6.3422e-06
1.736e-08
d
yr
n .2869695457395937 1.4508e-09 deg/d
Q 2.568831714407182 8.658e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2529  
   data-arc span      18464 days (50.55 yr)  
   first obs. used      1970-03-04  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38482  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:41:47  

Additional Information
 Earth MOID = 1.02266 au 
 Jupiter MOID = 2.64215 au 
 T_jup = 3.580 
[ 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 13.1   n/a MPO337272  
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. 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
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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