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22 Kalliope
Classification: Main-belt Asteroid          SPK-ID: 2000022
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 78 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09971790100973495 3.3951e-08  
a 2.910724503600738 6.5878e-09 AU
q 2.62047316568407 9.7679e-08 AU
i 13.71541143144235 3.8099e-06 deg
node 66.08188790198074 1.1445e-05 deg
peri 354.8822236915936 1.7628e-05 deg
M 240.3455540240042 1.4721e-05 deg
tp 2457603.373812217332
(2016-Aug-02.87381222)
7.5049e-05 JED
period 1813.844614196611
4.97
6.1578e-06
1.686e-08
d
yr
n .1984734509132423 6.738e-10 deg/d
Q 3.200975841517406 7.2447e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      2263  
   data-arc span      58932 days (161.35 yr)  
   first obs. used      1854-04-14  
   last obs. used      2015-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53173  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 13:53:27  

Additional Information
 Earth MOID = 1.63341 AU 
 T_jup = 3.234 
[ 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 6.45 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
magnitude slope G 0.21   n/a PDS3 (MPC 17257) Fit
diameter diameter 181.00 km 4.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
GM GM 0.491 km^3/s^2 0.05 Margot & Brown, Science 300, 1939-1942 (2003) Low density M-type (chondritic) confirmed as binary system in 2001.
bulk density density 2.37 g/cm^3 0.4 Margot & Brown, Science 300, 1939-1942 (2003)  
rotation period rot_per 4.1483 h n/a LCDB (Rev. 2015-July); Warner et al., 2009 Published Reference List:
[Zappala, V.; van Houten-Groeneveld, I. (1979) Icarus 40, 289-296.]
[Michalowski, T.; Velichko, F.P. (1990) Acta Astronomica 40, 321-332.]
[Trigo-Rodriquez, J.M.; Caso, A.S. (2003) Minor Planet Bul. 30, 26-27.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Alton, K.B. (2007) Minor Planet Bul. 34, 56.]
[Gungor, C. (2007) Minor Planet Bul. 34, 53.]
[Warner, B.D. (2007) Minor Planet Bul. 34, 72-77.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hamanowa, H.; Hamanowa, H. (2011) http://www2.ocn.ne.jp/~hamaten/astlcdata.htm]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Garlitz, J. (2012) http://eoni.com/~garlitzj/Period.htm]
geometric albedo albedo 0.1419   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
B-V BV .715 mag .023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=33; phase (min.=.44, mean=9.45, max.=21.85) deg.
U-B UB .234 mag .043 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=16; phase (min.=.44, mean=5.30, max.=11.85) deg.
Tholen spectral type spec_T M   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B X   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)

22 Kalliope          Discovered 1852-Nov-16 by Hind, J. R. at London
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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