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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 ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 95 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2070282860481987 3.5549e-08  
a 2.618740750117247 4.5803e-09 au
q 2.076587341015899 9.3476e-08 au
i 8.701923696224839 4.7546e-06 deg
node 333.3960920521811 2.6284e-05 deg
peri 152.7423774309433 2.8914e-05 deg
M 97.81785100462307 1.1387e-05 deg
tp 2458779.915945872956
(2019-Oct-23.41594587)
4.8775e-05 TDB
period 1547.87963475685
4.24
4.061e-06
1.112e-08
d
yr
n .2325762235747425 6.1018e-10 deg/d
Q 3.160894159218595 5.5286e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2838  
   data-arc span      57631 days (157.79 yr)  
   first obs. used      1863-04-10  
   last obs. used      2021-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46245  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-23 18:07:59  

Additional Information
 Earth MOID = 1.09557 au 
 Jupiter MOID = 1.90893 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 1.94723029242668 1.9472299759455 1.94723060890875 2.73124374144596 2.56704414662182 2433224.447670834 0.463247425318269 151.831504380913 5.97487310393631 84.1816358084516 3057512.80895993 T 95 CATAB v2.0f-lin.ifort 2021-Feb-23 18:08:08 2021-Feb-23 18:08
2009-May-05 10:02 < 00:01 Jupiter 1.9222050955813 1.9222047966896 1.92220539447431 2.79136911193695 2.62877130303816 2454956.918347454 0.164069419429683 187.567357113198 4.62995435072433 85.6452025312701 2969250.98140696 T 95 CATAB v2.0f-lin.ifort 2021-Feb-23 18:08:08 2021-Feb-23 18:08
2068-Nov-02 23:49 < 00:01 Jupiter 1.90727711270553 1.90727679355987 1.90727743185357 2.84034305026007 2.67943050976133 2476688.492552073 0.444194052135377 235.222391028053 5.81506744299642 86.3687005758145 2868689.39951053 T 95 CATAB v2.0f-lin.ifort 2021-Feb-23 18:08:08 2021-Feb-23 18:08
2128-May-05 01:36 < 00:01 Jupiter 1.90258089696345 1.90258056171926 1.90258123221122 2.87771603506503 2.71861295715086 2498420.566562796 0.856391050750573 284.743117545133 6.93599803339529 86.9686499113919 2759094.84592762 T 95 CATAB v2.0f-lin.ifort 2021-Feb-23 18:08:08 2021-Feb-23 18:08
2187-Nov-04 20:55 00:01 Jupiter 1.90917574699869 1.90917534825438 1.90917614575061 2.90463280632177 2.74764885850679 2520153.371288377 1.27670072748843 350.616226868872 8.55486290581836 87.2384995141246 2540842.357169 T 95 CATAB v2.0f-lin.ifort 2021-Feb-23 18:08:08 2021-Feb-23 18:08
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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