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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 ]

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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284703336627286 3.2227e-08  
a 2.276383921205813 6.8229e-09 au
q 1.983936119304031 7.3024e-08 au
i 9.365305931780863 4.8935e-06 deg
node 16.62674572148608 2.1574e-05 deg
peri 72.07067674353172 2.9376e-05 deg
M 289.0755402959006 1.877e-05 deg
tp 2459247.649778888577
(2021-Feb-02.14977889)		 6.5422e-05 TDB
period 1254.488518785926
3.43		 5.64e-06
1.544e-08		 d
yr
n .2869695454434308 1.2902e-09 deg/d
Q 2.568831723107594 7.6995e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2688  
   data-arc span      18520 days (50.70 yr)  
   first obs. used      1970-03-04  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37706  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:08:23  

Additional Information
 Earth MOID = 1.02266 au 
 Jupiter MOID = 2.64215 au 
 T_jup = 3.580 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456753.5 (2014-Apr-06.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .128455392851141 3.2257e-08  
q 1.984622191103037 7.3117e-08 au
tp 2456736.413636248943
(2014-Mar-19.91363625)		 6.6121e-05 TDB
node 16.73999510365198 2.1552e-05 deg
peri 71.6338511766693 2.9394e-05 deg
i 9.370129768493069 4.8951e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2688  
   data-arc span      18520 days (50.70 yr)  
   first obs. used      1970-03-04  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37706  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:08:23  

Additional Information
 Jupiter MOID = 2.64215 au 
 T_jup = 3.580 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.040537900599737E-15 -2.350829922738456E-15 -4.080381081800448E-13 3.976543607742018E-16 -1.218396650687924E-13 -4.018009285796987E-16
q -2.350829922738456E-15 5.34611015560626E-15 8.723753404130835E-13 -7.268777025987727E-16 2.596995554166621E-13 8.258026842422041E-16
tp -4.080381081800448E-13 8.723753404130835E-13 4.37204442002742E-9 -2.910920603006201E-12 1.329972603458895E-9 -8.928998273685098E-13
node 3.976543607742018E-16 -7.268777025987727E-16 -2.910920603006201E-12 4.644806093403527E-10 -4.583863345563726E-10 -1.73713886492107E-12
peri -1.218396650687924E-13 2.596995554166621E-13 1.329972603458895E-9 -4.583863345563726E-10 8.640151155587108E-10 1.491701369201082E-12
i -4.018009285796987E-16 8.258026842422041E-16 -8.928998273685098E-13 -1.73713886492107E-12 1.491701369201082E-12 2.396237054848663E-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. 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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