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78 Diana
Classification: Main-belt Asteroid          SPK-ID: 2000078
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 64 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2075275273178858 4.3984e-08  
a 2.618582723165541 5.354e-09 AU
q 2.07515472554966 1.1583e-07 AU
i 8.704838592075992 6.2118e-06 deg
node 333.4193844586029 2.6521e-05 deg
peri 153.0561180141122 2.9224e-05 deg
M 305.8671681571861 1.1653e-05 deg
tp 2457233.232009944542
(2015-Jul-29.73200994)
5.0202e-05 JED
period 1547.739527525886
4.24
4.7468e-06
1.3e-08
d
yr
n .2325972772534099 7.1335e-10 deg/d
Q 3.162010720781421 6.4651e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1300  
   data-arc span      54956 days (150.46 yr)  
   first obs. used      1863-04-10  
   last obs. used      2013-09-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59905  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:08:46  

Additional Information
 Earth MOID = 1.09431 AU 
 T_jup = 3.359 
[ 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 8.09 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 26
magnitude slope G 0.08   n/a PDS3 (MPC 17257) Fit
diameter diameter 120.60 km 2.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 26
rotation period rot_per 7.2991 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Licchelli, D. (2006) Minor Planet Bul. 33, 11-13.]
[Fleenor, M.L. (2007) Minor Planet Bul. 34, 66-67.]
[Fauerbach, M.; Marks, S.A.; Lucas, M.P. (2008) Minor Planet Bul. 35, 44-46.]
[Benishek, V.; Protitch-Benishek, V. (2008) Minor Planet Bul. 35, 28-30.]
geometric albedo albedo 0.0706   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 26
B-V BV .713 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=1.69, mean=8.62, max.=16.99) deg.
U-B UB .380 mag .010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=1.69, mean=9.58, max.=16.99) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Ch   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)

78 Diana          Discovered 1863-Mar-15 by Luther, R. at Dusseldorf
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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