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570 Kythera (1905 QX)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000570
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1213291372420638 4.1433e-08  
a 3.417411357567124 1.5952e-08 AU
q 3.002779785952275 1.4501e-07 AU
i 1.786936936866092 4.8985e-06 deg
node 223.9031722376385 0.00013491 deg
peri 155.2390840941726 0.00013623 deg
M 32.55004409806264 1.7181e-05 deg
tp 2456791.862007627949
(2014-May-14.36200763)
0.00010973 JED
period 2307.5138401551
6.32
1.6157e-05
4.424e-08
d
yr
n .1560120653385994 1.0924e-09 deg/d
Q 3.832042929181973 1.7888e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1725  
   data-arc span      39958 days (109.40 yr)  
   first obs. used      1905-07-31  
   last obs. used      2014-12-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59791  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:46:17  

Additional Information
 Earth MOID = 2.00502 AU 
 T_jup = 3.131 
[ 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 8.81 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
diameter diameter 102.81 km 2.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 8.120 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0500   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
B-V BV .775 mag .027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=.23, mean=8.39, max.=15.80) deg.
U-B UB .374 mag .071 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=.23, mean=8.39, max.=15.80) deg.
Tholen spectral type spec_T ST   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B T   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

570 Kythera (1905 QX)          Discovered 1905-Jul-30 by Wolf, M. at Heidelberg (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1905 QX = 1952 BE = 1994 PG40 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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