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1113 Katja (1928 QC)
Classification: Main-belt Asteroid          SPK-ID: 2001113
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1424258791170041 5.0996e-08  
a 3.111292195656969 1.9328e-08 au
q 2.668163669500651 1.5878e-07 au
i 13.28211740037461 7.0583e-06 deg
node 324.5499275025776 2.3294e-05 deg
peri 119.1799951586486 3.3005e-05 deg
M 270.0974337278541 2.4133e-05 deg
tp 2458101.086593537575
(2017-Dec-13.58659354)
0.0001363 JED
period 2004.516457605959
5.49
1.8679e-05
5.114e-08
d
yr
n .1795944346747627 1.6735e-09 deg/d
Q 3.554420721813286 2.2081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1059  
   data-arc span      39105 days (107.06 yr)  
   first obs. used      1909-02-26  
   last obs. used      2016-03-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60319  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:32:07  

Additional Information
 Earth MOID = 1.71248 au 
 Jupiter MOID = 1.71355 au 
 T_jup = 3.162 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.3 mag n/a MPO263354  
diameter diameter 38.50 km 2.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 4
rotation period rot_per 18.465 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Robinson, L.; Sada, P.V.; Cooney Jr., W.R. (2002) Minor Planet Bul. 29, 54-55.]
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.2071   0.023 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 4

1113 Katja (1928 QC)          Discovered 1928-Aug-15 by Shajn, P. at Simeis
Independent discovery Aug. 25 by M. Wolf, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1928 QC = A909 DH 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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