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JPL Small-Body Database Browser
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6996 Alvensleben (2222 T-2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2006996
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09834338731227714 3.2882e-08  
a 3.428514449912874 2.2909e-08 au
q 3.091342725459354 1.1391e-07 au
i 4.097886059168054 4.074e-06 deg
node 157.8437289371294 5.4902e-05 deg
peri 117.5856867519559 5.9131e-05 deg
M 142.5760798432366 2.0839e-05 deg
tp 2457682.164079612222
(2016-Oct-20.66407961)
0.00013693 TDB
period 2318.76855993725
6.35
2.324e-05
6.363e-08
d
yr
n .15525482198609 1.5561e-09 deg/d
Q 3.765686174366395 2.5162e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2421  
   data-arc span      16601 days (45.45 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48013  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 18:47:52  

Additional Information
 Earth MOID = 2.07743 au 
 Jupiter MOID = 1.35723 au 
 T_jup = 3.129 
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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 12.2   n/a MPO337314  
diameter diameter 18.809 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6996 Alvensleben (2222 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 2222 T-2 = 1977 EV4 = 1977 FV = 1986 TR10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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