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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 158 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04366940784130571 1.655e-08  
a 2.862041821119725 4.6052e-09 au
q 2.737058149574374 4.9291e-08 au
i 1.130176564803244 1.4369e-07 deg
node 323.6337985163116 2.9506e-05 deg
peri 113.9413599777092 3.4391e-05 deg
M 41.61153374870766 1.9759e-05 deg
tp 2459192.079892174372
(2020-Dec-08.57989217)
9.7293e-05 TDB
period 1768.52983265755
4.84
4.2685e-06
1.169e-08
d
yr
n .203558907151163 4.9131e-10 deg/d
Q 2.987025492665076 4.8064e-09 au
  Orbit Determination Parameters
   # obs. used (total)      4477  
   data-arc span      49794 days (136.33 yr)  
   first obs. used      1885-01-18  
   last obs. used      2021-05-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42524  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:45:34  

Additional Information
 Earth MOID = 1.75243 au 
 Jupiter MOID = 2.1183 au 
 T_jup = 3.300 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457161.5 (2015-May-19.0) TDB
Reference: JPL 158 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04133674428811092 1.6068e-08  
q 2.743376412918249 4.7627e-08 au
tp 2457409.213121066923
(2016-Jan-21.71312107)
0.00010885 TDB
node 324.0249064797254 2.9443e-05 deg
peri 110.6817575983826 3.5345e-05 deg
i 1.132155521941802 1.4284e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      4477  
   data-arc span      49794 days (136.33 yr)  
   first obs. used      1885-01-18  
   last obs. used      2021-05-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42524  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:45:34  

Additional Information
 Jupiter MOID = 2.1183 au 
 T_jup = 3.300 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.581671623485927E-16 -7.624687986219237E-16 6.095263060221494E-13 6.146930773327189E-14 7.8306055163084E-14 3.347357944449461E-17
q -7.624687986219237E-16 2.268334093321281E-15 -1.967397341387112E-12 -1.92193561995285E-13 -2.5789002054746E-13 -8.746718179683202E-17
tp 6.095263060221494E-13 -1.967397341387112E-12 1.184878976289178E-8 4.132608211405354E-10 2.200447063625239E-9 -4.30176795902801E-13
node 6.146930773327189E-14 -1.92193561995285E-13 4.132608211405354E-10 8.66866974530513E-10 -7.695073151006017E-10 -1.084696233446742E-12
peri 7.8306055163084E-14 -2.5789002054746E-13 2.200447063625239E-9 -7.695073151006017E-10 1.249262336864886E-9 9.870627738476878E-13
i 3.347357944449461E-17 -8.746718179683202E-17 -4.30176795902801E-13 -1.084696233446742E-12 9.870627738476878E-13 2.040463112398886E-14

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.93   n/a MPCxxxxx 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. 2020-October); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[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.]
[Polakis, T. (2020) Minor Planet Bull. 47, 13-17.]
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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