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2711 Aleksandrov (1978 QB2)
Classification: Main-belt Asteroid          SPK-ID: 2002711
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09461878132827777 3.7086e-08  
a 3.006583096856081 1.3842e-08 au
q 2.722103868269359 1.0931e-07 au
i 10.27287865640282 3.7106e-06 deg
node 157.5772575697621 2.0185e-05 deg
peri 204.9830908121359 2.7284e-05 deg
M 348.3026174231142 1.7407e-05 deg
tp 2459062.372040303385
(2020-Jul-31.87204030)
9.2019e-05 TDB
period 1904.181073228485
5.21
1.315e-05
3.6e-08
d
yr
n .1890576505886755 1.3056e-09 deg/d
Q 3.291062325442803 1.5151e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2784  
   data-arc span      18555 days (50.80 yr)  
   first obs. used      1970-01-07  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46655  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:06:49  

Additional Information
 Earth MOID = 1.72201 au 
 Jupiter MOID = 2.15282 au 
 T_jup = 3.220 
[ show covariance matrix ]

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 11.7   n/a MPO435723  
diameter diameter 13.547 km 0.489 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.121   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

2711 Aleksandrov (1978 QB2)          Discovered 1978-Aug-31 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1978 QB2 = 1953 XM1 = 1970 AE1 = 1971 FV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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