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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09834338792448358 3.288e-08  
a 3.428514451187872 2.2621e-08 au
q 3.091342724510005 1.1388e-07 au
i 4.097885885014929 4.0359e-06 deg
node 157.8437280313367 5.4822e-05 deg
peri 117.5856881159775 5.8925e-05 deg
M 142.5760792444521 2.0614e-05 deg
tp 2457682.164082956740
(2016-Oct-20.66408296)
0.0001353 TDB
period 2318.768561230707
6.35
2.2949e-05
6.283e-08
d
yr
n .1552548218994856 1.5366e-09 deg/d
Q 3.765686177865738 2.4846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2472  
   data-arc span      16843 days (46.11 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47883  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:58:30  

Additional Information
 Earth MOID = 2.07743 au 
 Jupiter MOID = 1.35723 au 
 T_jup = 3.129 
[ 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 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

[ show close-approach data ]
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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