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212997 (3238 T-2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2212997
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08331911641100888 3.8671e-08  
a 3.226561442826473 2.8566e-08 au
q 2.957727194364341 1.2672e-07 au
i 20.75826169378743 4.222e-06 deg
node 177.2668766595391 1.22e-05 deg
peri 190.6864402578335 2.9376e-05 deg
M 56.27010963667818 2.6291e-05 deg
tp 2458869.610034522222
(2020-Jan-21.11003452)
0.00015535 TDB
period 2116.938963530196
5.80
2.8113e-05
7.697e-08
d
yr
n .1700568633304693 2.2583e-09 deg/d
Q 3.495395691288604 3.0946e-08 au
  Orbit Determination Parameters
   # obs. used (total)      522  
   data-arc span      17309 days (47.39 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51775  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:40:55  

Additional Information
 Earth MOID = 1.95551 au 
 Jupiter MOID = 1.96447 au 
 T_jup = 3.080 
[ 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 15.13   n/a MPCxxxxx  
diameter diameter 6.223 km 1.649 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

212997 (3238 T-2)          Discovered 1973-Sep-30 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 3238 T-2 = 2002 TH203 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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