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78 Diana
Classification: Main-belt Asteroid          SPK-ID: 2000078
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2073652079047835 3.7269e-08  
a 2.619441852303631 4.9219e-09 au
q 2.076260748006197 9.8496e-08 au
i 8.700973567044324 4.8578e-06 deg
node 333.4009193808643 2.722e-05 deg
peri 152.7725038434153 2.9798e-05 deg
M 318.2551676263378 1.1672e-05 deg
tp 2458780.060907182690
(2019-Oct-23.56090718)		 5.0305e-05 TDB
period 1548.501285312445
4.24		 4.3644e-06
1.195e-08		 d
yr
n .2324828551416809 6.5525e-10 deg/d
Q 3.162622956601065 5.9425e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2554  
   data-arc span      57209 days (156.63 yr)  
   first obs. used      1863-04-10  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46646  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:00:58  

Additional Information
 Earth MOID = 1.0957 au 
 Jupiter MOID = 1.90908 au 
 T_jup = 3.359 
[ show covariance matrix ]

[ 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 8.09   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 LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Licchelli, D. (2006) Minor Planet Bull. 33, 11-13.]
[Fleenor, M.L. (2007) Minor Planet Bull. 34, 66-67.]
[Benishek, V.; Protitch-Benishek, V. (2008) Minor Planet Bull. 35, 28-30.]
[Fauerbach, M.; Marks, S.A.; Lucas, M.P. (2008) Minor Planet Bull. 35, 44-46.]
geometric albedo albedo 0.0706   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 26
B-V BV 0.713   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=1.69, mean=8.62, max.=16.99) deg.
U-B UB 0.380   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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

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