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216 Kleopatra (A880 GB)
Classification: Main-belt Asteroid          SPK-ID: 2000216
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 125 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2512106651802283 1.276e-08  
a 2.792485052136695 4.8212e-09 au
q 2.090983024683591 3.4256e-08 au
i 13.11591955962701 5.9525e-07 deg
node 215.3470111988925 2.5581e-06 deg
peri 179.9599712506293 4.3032e-06 deg
M 197.5128219439587 6.2799e-06 deg
tp 2459969.809876445384
(2023-Jan-25.30987645)
3.1322e-05 TDB
period 1704.451753262761
4.67
4.414e-06
1.208e-08
d
yr
n .2112116106019821 5.4698e-10 deg/d
Q 3.493987079589799 6.0323e-09 au
  Orbit Determination Parameters
   # obs. used (total)      4016  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      51470 days (140.92 yr)  
   first obs. used      1880-04-20  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36946  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:03:33  

Additional Information
 Earth MOID = 1.09682 au 
 Jupiter MOID = 1.94238 au 
 T_jup = 3.245 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457040.5 (2015-Jan-18.0) TDB
Reference: JPL 125 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2496726522887695 1.2682e-08  
q 2.097907265256447 3.3958e-08 au
tp 2456560.585720413871
(2013-Sep-25.08572041)
2.4958e-05 TDB
node 215.3896324378647 2.5601e-06 deg
peri 180.2875171225321 4.3251e-06 deg
i 13.1006631794494 5.9411e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      4016  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      51470 days (140.92 yr)  
   first obs. used      1880-04-20  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36946  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:03:33  

Additional Information
 Jupiter MOID = 1.94238 au 
 T_jup = 3.245 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.608427877187997E-16 -4.287138512417342E-16 -1.703091827692478E-14 -8.999559600176336E-15 -3.364801435102029E-15 3.139578469319256E-15
q -4.287138512417342E-16 1.153170623812231E-15 1.058176776975293E-13 2.452751399156606E-14 1.815388867497728E-14 -8.843177826571575E-15
tp -1.703091827692478E-14 1.058176776975293E-13 6.22899687404657E-10 1.059266468308231E-11 9.141933892113025E-11 -4.604270567469419E-12
node -8.999559600176336E-15 2.452751399156606E-14 1.059266468308231E-11 6.554149794401261E-12 -3.805759563317159E-12 -1.15282947069717E-12
peri -3.364801435102029E-15 1.815388867497728E-14 9.141933892113025E-11 -3.805759563317159E-12 1.870660190562369E-11 2.757580016427857E-13
i 3.139578469319256E-15 -8.843177826571575E-15 -4.604270567469419E-12 -1.15282947069717E-12 2.757580016427857E-13 3.529685611251236E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.07   n/a MPCxxxxx IRAS observations used: 19
magnitude slope G 0.29   n/a PDS3 (MPC 17258) Fit
diameter diameter 122 km 30 [Shepard, M. K. et al. (2018) Icarus 311, 197-209]  
extent extent 276x94x78 km 15% [Shepard, M. K. et al. (2018) Icarus 311, 197-209]  
rotation period rot_per 5.385 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Scaltriti, F.; Zappala, V. (1978) Icarus 34, 428-435.]
[Kennedy, H.D.; Tholen, D.J. (1982) Proc. Astron. Soc. Aust. 4, 414-417.]
[Pilcher, F.; Tholen, D.J. (1982) Minor Planet Bull. 9, 13-14.]
[Magnusson, P. (1983) in Asteroids, Comets, Meteors. C.-I. Lagerkvist, H. Rickman, eds. Uppsala, pp. 77-85.]
[Zappala, V.; Di Martino, M.; Scaltriti, F.; Djurasevic, G.; Knezevic, Z. (1983) Icarus 53, 458-464.]
[Magnusson, P. (1986) Icarus 68, 1-39.]
[Lupishko, D.F.; Velichko, F.P. (1987) Kin. Fiz. Neb. Tel 3(1), 57-65; Kinematics and Physics of Celestial Bodies 3(1), 63-71.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1988) Icarus 76, 19-77.]
[Magnusson, P. (1990) Icarus 85, 229-240.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1991) Icarus 89, 44-64.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Fauvaud, S.; Sareyan, J.; Boussuge, J.; Bernhard, P. (2001) Minor Planet Bull. 28, 44-45.]
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2006) Minor Planet Bull. 33, 85-88.]
[Garlitz, J. (2008) http://eoni.com/~garlitzj/Period.htm]
[Alton, K.B. (2009) Minor Planet Bull. 36, 69.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Kaasalainen, M.; Viikinkoski, M. (2012) Astron. Astrophys. 543, A97.]
[Shevchenko, V.G.; Velichko, F.P.; Checha, V.A.; Krugly, Y.N. (2014) Minor Planet Bull. 41, 195-198.]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
[Novak, R.; Alton, K.B. (2018) Minor Planet Bull. 45, 243.]
[Shepard, M.K.; Timerson, B.; Scheeres, D.J.; Benner, L.A.M.; et al. (2018) Icarus 311, 197-209.]
[Alton, K.B. (2019) Minor Planet Bull. 46, 114-117.]
[Cellino, A.; Hestroffer, D.; Lu, X.-P.; Muinonen, K.; Tanga, P. (2019) Astron. Astrophys. 631, A67.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
pole direction pole 69, 42   5 degrees [Shepard, M. K. et al. (2018) Icarus 311, 197-209]  
geometric albedo albedo 0.1164   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
B-V BV 0.713   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=22; phase (min.=6.01, mean=15.14, max.=25.13) deg.
U-B UB 0.238   0.009 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=15; phase (min.=8.51, mean=15.63, max.=25.13) 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 Xe   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)

216 Kleopatra (A880 GB)          Discovered 1880-Apr-10 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A880 GB = A905 OA = A910 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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