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243 Ida (A884 SB)
Classification: Main-belt Asteroid          SPK-ID: 2000243
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 149 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04326773523473785 2.7846e-08  
a 2.860838470106934 5.8121e-09 au
q 2.737056468632995 8.1785e-08 au
i 1.130237371083703 2.8156e-06 deg
node 323.6310859275075 0.00014255 deg
peri 114.0946557247195 0.00014764 deg
M 320.8397572326118 4.1091e-05 deg
tp 2459192.756621985839
(2020-Dec-09.25662199)
0.00020186 TDB
period 1767.414577228842
4.84
5.3861e-06
1.475e-08
d
yr
n .2036873547599963 6.2072e-10 deg/d
Q 2.984620471580873 6.0636e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3941  
   data-arc span      49323 days (135.04 yr)  
   first obs. used      1885-01-18  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4476  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:22:01  

Additional Information
 Earth MOID = 1.75261 au 
 Jupiter MOID = 2.12049 au 
 T_jup = 3.300 
[ hide covariance matrix ]
Orbital Elements at Epoch 2453542.5 (2005-Jun-21.0) TDB
Reference: JPL 149 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0461834254110659 2.8095e-08  
q 2.729407717715867 8.3008e-08 au
tp 2453862.217782654330
(2006-May-06.71778265)
0.00018325 TDB
node 324.2134757219263 0.00014152 deg
peri 108.5909621821131 0.00014588 deg
i 1.137545289147971 2.8179e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3941  
   data-arc span      49323 days (135.04 yr)  
   first obs. used      1885-01-18  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4476  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:22:01  

Additional Information
 Jupiter MOID = 2.12049 au 
 T_jup = 3.300 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.893146591836301E-16 -2.327304399392518E-15 -7.943752003904094E-13 1.360519985959913E-14 -1.887198297853351E-13 3.029835777989732E-16
q -2.327304399392518E-15 6.890249436293743E-15 2.480625453690835E-12 -5.198071073599637E-14 5.958999240530852E-13 -1.219866421363066E-15
tp -7.943752003904094E-13 2.480625453690835E-12 3.358063336123531E-8 4.474893376036912E-10 6.489000011718068E-9 1.021188548018176E-11
node 1.360519985959913E-14 -5.198071073599637E-14 4.474893376036912E-10 2.002929362426334E-8 -1.993686746883134E-8 -5.36622066732629E-12
peri -1.887198297853351E-13 5.958999240530852E-13 6.489000011718068E-9 -1.993686746883134E-8 2.128240075724102E-8 7.37095084309543E-12
i 3.029835777989732E-16 -1.219866421363066E-15 1.021188548018176E-11 -5.36622066732629E-12 7.37095084309543E-12 7.940403886146467E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.9   n/a MPO502155 IRAS observations used: 13
diameter diameter 32 km n/a Belton et al. (1995) Yeomans E-mail 2001-Apr-04
extent extent 59.8x25.4x18.6 km n/a Thomas et al. (1996) Icarus v.120, pp.20-32 fit ellipsoid
GM GM 0.00275 km^3/s^2 0.00035 Belton et al. (1996) Icarus v.120, pp.185-199 0.0024 < GM < 0.0031
bulk density density 2.6 g/cm^3 0.5 Belton et al. (1996) Icarus v.120, pp.185-199  
rotation period rot_per 4.634 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Gonano-Beurer, M.; Di Martino, M.; Mottola, S.; Neukum, G. (1992) Astron. Astrophys. 254, 393-396.]
[Binzel, R.P.; Slivan, S.M.; Magnusson, P.; Wisniewski, W.Z.; et al. (1993) Icarus 105, 310-325.]
[Davies, M.E.; Colvin, T.R.; Belton, M.J.S.; Veverka, J.; Thomas, P.C. (1996) Icarus 120, 33-37.]
[Cieza, L.A.; Ciliberti, L.N.; Iserte, J.A. (1999) IAPPP Comm. #74, 12-23.]
[Kaasalainen, M.; Torppa, J.; Muinonen, K. (2001) Icarus 153, 37-51.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Proyecto ECLA (Silvia Alonso Perez) (2011) http://www.geocities.com/proyectoecla/]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
geometric albedo albedo 0.262   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.802   0.009 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=.81, mean=6.76, max.=14.56) deg.
U-B UB 0.416   0.037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=.81, mean=5.40, max.=14.56) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   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)

243 Ida (A884 SB)          Discovered 1884-Sep-29 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A884 SB = 1988 DB1 = A910 CD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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