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22278 Protitch (1983 RT3)
Classification: Main-belt Asteroid          SPK-ID: 2022278
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1833026201892487 2.6282e-08  
a 2.55818747789143 9.5196e-09 au
q 2.089265010258605 6.8217e-08 au
i 11.69565408204718 3.1079e-07 deg
node 329.5240109353707 3.7352e-06 deg
peri 60.9602885506331 5.0553e-06 deg
M 4.869114078075293 3.6885e-06 deg
tp 2459180.286364551101
(2020-Nov-26.78636455)
1.53e-05 TDB
period 1494.503649928891
4.09
8.3421e-06
2.284e-08
d
yr
n .2408826502478792 1.3446e-09 deg/d
Q 3.027109945524255 1.1265e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1690  
   data-arc span      13704 days (37.52 yr)  
   first obs. used      1983-09-02  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44427  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:03:08  

Additional Information
 Earth MOID = 1.11931 au 
 Jupiter MOID = 2.55229 au 
 T_jup = 3.384 
[ 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 13.77   n/a E2021B10  
diameter diameter 4.897 km 0.353 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 1.03 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.352   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22278 Protitch           Discovered 1983 Sept. 2 by H. Debehogne at the European Southern Observatory.
Known for his work in celestial mechanics and fundamental astronomy, Milorad B. Protitch (1911-2001) was three times director of the Belgrade Observatory. He independently found comet C/1947 Y1 and discovered more than 30 minor planets. The name was suggested by his daughter, V. Protitch-Benishek.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20011230/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1983 RT3 = 1987 QJ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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