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89 Julia
Classification: Main-belt Asteroid          SPK-ID: 2000089
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 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827667105902454 3.699e-08  
a 2.552568164641582 4.3299e-09 AU
q 2.08604367763266 9.517e-08 AU
i 16.13982171848296 3.0644e-06 deg
node 311.6043220483042 1.5924e-05 deg
peri 45.16036956188879 1.821e-05 deg
M 110.6395312943558 8.4347e-06 deg
tp 2456542.703702335957
(2013-Sep-07.20370234)
3.4877e-05 JED
period 1489.582116184027
4.08
3.7901e-06
1.038e-08
d
yr
n .2416785191555861 6.1493e-10 deg/d
Q 3.019092651650503 5.1212e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1657  
   data-arc span      54173 days (148.32 yr)  
   first obs. used      1866-08-07  
   last obs. used      2014-12-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60859  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:42:55  

Additional Information
 Earth MOID = 1.10816 AU 
 T_jup = 3.361 
[ 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 6.60 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
magnitude slope G 0.15   n/a PDS3 (MPC 17257) Fit
diameter diameter 151.46 km 3.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
rotation period rot_per 11.387 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Schober, H.J.; Lustig, G. (1975) Icarus 25, 339-343.]
[Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2007) Planet. Space Sci. 55, 986-997.]
[Ditteon, R.; Hawkins, S. (2007) Minor Planet Bul. 34, 59-64.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
geometric albedo albedo 0.1764   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
B-V BV .859 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=8; phase (min.=4.36, mean=12.82, max.=24.83) deg.
U-B UB .442 mag .027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=8; phase (min.=4.36, mean=12.82, max.=24.83) 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 K   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)

89 Julia          Discovered 1866-Aug-06 by Stephan, E. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A893 EA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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