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78 Diana (A863 EA)
Classification: Main-belt Asteroid          SPK-ID: 2000078
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 102 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2066670049357609 7.7219e-09  
a 2.61960644822191 3.7677e-09 au
q 2.078220229457481 2.0103e-08 au
i 8.702155727048719 2.9306e-07 deg
node 333.3922484786294 2.2236e-06 deg
peri 152.8037033660965 8.6078e-06 deg
M 143.3502197511078 5.9835e-06 deg
tp 2458779.836327048277
(2019-Oct-23.33632705)
2.5602e-05 TDB
period 1548.647240639508
4.24
3.3411e-06
9.147e-09
d
yr
n .2324609443344499 5.0152e-10 deg/d
Q 3.160992666986339 4.5464e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3069  
   data-arc span      57830 days (158.33 yr)  
   first obs. used      1863-04-10  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4589  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:10:22  

Additional Information
 Earth MOID = 1.09781 au 
 Jupiter MOID = 1.9084 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 8.39   n/a E2021B10 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. 2020-October); 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.]
[Franco, L.; Marchini, A.; Saya, L.-F.; Galli, G.; et al. (2020) Minor Planet Bull. 47, 242-246.]
[Pilcher, F. (2020) Minor Planet Bull. 47, 344-346.]
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 (A863 EA)          Discovered 1863-Mar-15 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1949-Nov-03 22:45 < 00:01 Jupiter 1.94723013673499 1.94723001727122 1.94723025619899 2.73124346370253 2.56704383850024 2433224.447626860 0.399487576667664 34.276521246296 2.53931619205823 79.432751212223 22075608.1625839 T 102 CATAB v2.0g-lin.ifort 2021-Aug-25 06:11:33 2021-Aug-25 06:11
2009-May-05 10:02 < 00:01 Jupiter 1.9222049160525 1.92220485385439 1.92220497825061 2.79136871869478 2.62877087074288 2454956.918302631 0.108724757551947 21.5495031556385 1.41782589373048 85.7013736972099 24266813.0835669 T 102 CATAB v2.0g-lin.ifort 2021-Aug-25 06:11:33 2021-Aug-25 06:11
2068-Nov-02 23:49 < 00:01 Jupiter 1.90727692756858 1.90727683408692 1.90727702105045 2.84034246685886 2.67942987615112 2476688.492398596 0.337040436812239 37.3934673152892 1.75465209914357 84.7195464959818 22856101.8998995 T 102 CATAB v2.0g-lin.ifort 2021-Aug-25 06:11:33 2021-Aug-25 06:11
2128-May-05 01:35 < 00:01 Jupiter 1.90258065074625 1.9025805407548 1.90258076073814 2.87771519666738 2.7186120493994 2498420.566234949 0.685261387401515 53.6528764201416 1.7885269538332 86.2654899350588 25191791.5182635 T 102 CATAB v2.0g-lin.ifort 2021-Aug-25 06:11:33 2021-Aug-25 06:11
2187-Nov-04 20:54 00:01 Jupiter 1.90917535876798 1.90917515437655 1.90917556316278 2.90463168409522 2.74764764022039 2520153.370744951 1.03820930275237 136.69007010944 1.55453574995506 86.7186399799805 20593079.5522092 T 102 CATAB v2.0g-lin.ifort 2021-Aug-25 06:11:33 2021-Aug-25 06:11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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