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JPL Small-Body Database Browser
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20938 (1075 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2020938
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .174551589876198 2.9273e-08  
a 2.232230265211518 8.2257e-09 au
q 1.842590923449081 6.736e-08 au
i 7.502781622350499 5.1722e-06 deg
node 350.63776916 2.5252e-05 deg
peri 271.8891653956609 2.994e-05 deg
M 319.8773195828989 1.5083e-05 deg
tp 2458736.267041028375
(2019-Sep-09.76704103)		 5.0887e-05 TDB
period 1218.167237635074
3.34		 6.7334e-06
1.844e-08		 d
yr
n .2955259252406894 1.6335e-09 deg/d
Q 2.621869606973956 9.6615e-09 au
   Orbit Determination Parameters
   # obs. used (total)      876  
   data-arc span      16670 days (45.64 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55842  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:56:55  

Additional Information
 Earth MOID = .845742 au 
 Jupiter MOID = 2.49567 au 
 T_jup = 3.610 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO279732  
diameter diameter 2.589 km 0.278 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.166   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20938 (1075 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1075 T-2 = 1993 RL17 = 1999 GP60 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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