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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1431329036172279 5.1261e-08  
a 3.109338982959925 1.9386e-08 AU
q 2.664290265998633 1.5951e-07 AU
i 13.28317999231364 7.2893e-06 deg
node 324.5572786885456 2.3492e-05 deg
peri 119.1478718512956 3.3552e-05 deg
M 126.4142266330215 2.3855e-05 deg
tp 2456097.275511359849
(2012-Jun-18.77551136)
0.00013072 JED
period 2002.629155382775
5.48
1.8729e-05
5.128e-08
d
yr
n .179763686667785 1.6812e-09 deg/d
Q 3.554387699921218 2.2161e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1018  
   data-arc span      38460 days (105.30 yr)  
   first obs. used      1909-02-26  
   last obs. used      2014-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59654  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:57:56  

Additional Information
 Earth MOID = 1.70964 AU 
 T_jup = 3.163 
[ 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 (094)
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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