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168321 Josephschmidt (1991 RJ3)
Classification: Main-belt Asteroid          SPK-ID: 2168321
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2535544776415815 1.8771e-07  
a 2.548206625873031 2.6542e-08 au
q 1.902097425926978 4.9478e-07 au
i 3.647328450313337 1.0953e-05 deg
node 255.291608490007 0.0001046 deg
peri 71.61692339027778 0.00010851 deg
M 303.3600060771997 3.5104e-05 deg
tp 2458834.260477185653
(2019-Dec-16.76047719)
0.00014802 TDB
period 1485.765904239604
4.07
2.3213e-05
6.355e-08
d
yr
n .2422992740462997 3.7857e-09 deg/d
Q 3.194315825819084 3.3272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      190  
   data-arc span      11683 days (31.99 yr)  
   first obs. used      1987-08-25  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53994  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:44:02  

Additional Information
 Earth MOID = .89347 au 
 Jupiter MOID = 2.17425 au 
 T_jup = 3.393 
[ 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 16.5   n/a MPO287712  
diameter diameter 3.659 km 0.996 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.030   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

168321 Josephschmidt           Discovered 1991 Sept. 12 by F. Börngen and L. D. Schmadel at Tautenburg.
Joseph Schmidt (1904-1942), an operatic tenor who performed in the world's top concert halls, also had a phenomenal career in radio and film. He emigrated from Germany in 1933, and after wandering through several countries he died in a Swiss refugee camp. The name was suggested by the first discoverer and M. Griesser.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080122/MPCPages.arcLast Updated: 2008-03-05

Alternate Designations
 1991 RJ3 = 1999 TM280 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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