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2754 Efimov (1966 PD)
Classification: Main-belt Asteroid          SPK-ID: 2002754
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2317969386127307 4.511e-08  
a 2.22808249174654 6.3173e-09 au
q 1.711619791183067 1.0107e-07 au
i 5.712518186318523 3.3029e-06 deg
node 275.1241975743947 4.7965e-05 deg
peri 91.17357980205718 4.8348e-05 deg
M 36.63379313599116 6.9518e-06 deg
tp 2458876.883992230364
(2020-Jan-28.38399223)
2.3273e-05 TDB
period 1214.773546159161
3.33
5.1664e-06
1.414e-08
d
yr
n .2963515308167835 1.2604e-09 deg/d
Q 2.744545192310012 7.7816e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1925  
   data-arc span      25183 days (68.95 yr)  
   first obs. used      1951-02-04  
   last obs. used      2020-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44935  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:30:13  

Additional Information
 Earth MOID = .722006 au 
 Jupiter MOID = 2.75626 au 
 T_jup = 3.602 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO279543  
rotation period rot_per 2.44967 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pray, D.; Pravec, P.; Pikler, M.; Husarik, M.; et al. (2006) CBET 617.]
[Pravec, P.; Scheirich, P.; Vokrouhlicky, D.; Harris, A.W.; et al. (2012) Icarus 218, 125-143. See also supplemental on-line material.]
SMASSII spectral type spec_B Sa   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2754 Efimov (1966 PD)          Discovered 1966-Aug-13 by Smirnova, T. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1966 PD = 1933 WF = 1966 RB = 1973 YR1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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