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JPL Small-Body Database Browser
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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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .128470326532673 3.3921e-08  
a 2.276383918183648 8.2796e-09 au
q 1.983936132900869 7.5737e-08 au
i 9.365305337098134 5.2134e-06 deg
node 16.62675485562378 2.373e-05 deg
peri 72.07066952855001 3.2309e-05 deg
M 289.0755410008674 2.2526e-05 deg
tp 2459247.649775939806
(2021-Feb-02.14977594)
7.8941e-05 TDB
period 1254.488516287706
3.43
6.8442e-06
1.874e-08
d
yr
n .286969546014909 1.5656e-09 deg/d
Q 2.568831703466427 9.3432e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2396  
   data-arc span      18138 days (49.66 yr)  
   first obs. used      1970-03-04  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39875  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:31:09  

Additional Information
 Earth MOID = 1.02266 au 
 Jupiter MOID = 2.64215 au 
 T_jup = 3.580 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456374.5 (2013-Mar-23.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1281751491088724 3.3921e-08  
q 1.984869638640644 7.5698e-08 au
tp 2456736.470641933048
(2014-Mar-19.97064193)
7.5491e-05 TDB
node 16.74907152112015 2.3705e-05 deg
peri 71.63457945242594 3.2354e-05 deg
i 9.370812744171779 5.2148e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2396  
   data-arc span      18138 days (49.66 yr)  
   first obs. used      1970-03-04  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39875  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:31:09  

Additional Information
 Jupiter MOID = 2.64215 au 
 T_jup = 3.580 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.150648793742593E-15 -2.55677258574625E-15 -3.245197412284587E-14 -2.937109873741952E-16 -2.438091231712835E-14 -3.618675444687513E-16
q -2.55677258574625E-15 5.730253914888593E-15 1.726154097268436E-13 5.071823549339942E-16 7.8190620680153E-14 6.46431956989936E-16
tp -3.245197412284587E-14 1.726154097268436E-13 5.698933639026229E-9 -4.693908669134106E-12 1.672013594522628E-9 -3.335859883532712E-12
node -2.937109873741952E-16 5.071823549339942E-16 -4.693908669134106E-12 5.619445121197796E-10 -5.54934746915138E-10 -1.843872898764145E-11
peri -2.438091231712835E-14 7.8190620680153E-14 1.672013594522628E-9 -5.54934746915138E-10 1.046795330365984E-9 1.728969944725548E-11
i -3.618675444687513E-16 6.46431956989936E-16 -3.335859883532712E-12 -1.843872898764145E-11 1.728969944725548E-11 2.719462414632131E-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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