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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284703327311402 3.2429e-08  
a 2.276383920637815 7.1357e-09 au
q 1.983936120929657 7.3306e-08 au
i 9.365305804074998 5.0596e-06 deg
node 16.62674621068641 2.2031e-05 deg
peri 72.07067513363192 3.0054e-05 deg
M 289.0755417723535 1.973e-05 deg
tp 2459247.649773651094
(2021-Feb-02.14977365)
6.8872e-05 TDB
period 1254.488518316401
3.43
5.8986e-06
1.615e-08
d
yr
n .2869695455508366 1.3493e-09 deg/d
Q 2.568831720345973 8.0524e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2662  
   data-arc span      18503 days (50.66 yr)  
   first obs. used      1970-03-04  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37873  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:06:01  

Additional Information
 Earth MOID = 1.02266 au 
 Jupiter MOID = 2.64215 au 
 T_jup = 3.580 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456686.5 (2014-Jan-29.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1283761162324472 3.2455e-08  
q 1.984617544110697 7.3377e-08 au
tp 2456736.469090170420
(2014-Mar-19.96909017)
6.8571e-05 TDB
node 16.74553739517936 2.2008e-05 deg
peri 71.64895386745508 3.0081e-05 deg
i 9.370515619546865 5.0612e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2662  
   data-arc span      18503 days (50.66 yr)  
   first obs. used      1970-03-04  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37873  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:06:01  

Additional Information
 Jupiter MOID = 2.64215 au 
 T_jup = 3.580 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.053302698514029E-15 -2.372990811661557E-15 -3.452064372881821E-13 -1.893607592219348E-15 -1.031405958708863E-13 1.657536850142161E-16
q -2.372990811661557E-15 5.384147560410133E-15 7.617870848938414E-13 4.375612261294357E-15 2.257437203923414E-13 -4.21743353640644E-16
tp -3.452064372881821E-13 7.617870848938414E-13 4.702004212965375E-9 -1.006272522608584E-12 1.414801579739154E-9 -2.096353402723149E-12
node -1.893607592219348E-15 4.375612261294357E-15 -1.006272522608584E-12 4.84344072473534E-10 -4.773191344405363E-10 -7.458443792912637E-12
peri -1.031405958708863E-13 2.257437203923414E-13 1.414801579739154E-9 -4.773191344405363E-10 9.048444904092074E-10 6.771752219394387E-12
i 1.657536850142161E-16 -4.21743353640644E-16 -2.096353402723149E-12 -7.458443792912637E-12 6.771752219394387E-12 2.561616922137788E-11

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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