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620 Drakonia (A906 UO)
Classification: Main-belt Asteroid          SPK-ID: 2000620
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1344394843152444 4.1937e-08  
a 2.435331028654044 8.0185e-09 au
q 2.107926381024881 1.0392e-07 au
i 7.736673712502485 4.7659e-06 deg
node 359.9469500245387 2.7954e-05 deg
peri 336.136049269829 3.1991e-05 deg
M 11.60080647563763 1.6119e-05 deg
tp 2458955.767712107819
6.2124e-05 TDB
period 1388.14690814847
n .2593385454282884 1.2808e-09 deg/d
Q 2.762735676283207 9.0965e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3199  
   data-arc span      32339 days (88.54 yr)  
   first obs. used      1931-03-27  
   last obs. used      2019-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37657  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:32:23  

Additional Information
 Earth MOID = 1.10154 au 
 Jupiter MOID = 2.61511 au 
 T_jup = 3.480 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.9   n/a MPO492756  
diameter diameter 11.385 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.487 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2002) Minor Planet Bull. 29, 27-28.]
[Bel'skaya, I.N.; Shevchenko, V.G.; Kiselev, N.; Krugly, Yu.N.; et al. (2003) Icarus 166, 276-284.]
[Almeida, R.; Angeli, C.A.; Duffard, R.; Lazzaro, D. (2004) Astron. Astrophys. 415, 403-406.]
[Bin, L.; Haibin, Z.; Jingshen, Y. (2011) Minor Planet Bull. 38, 179-180.]
[Warner, B.D. (2011) Minor Planet Bull. 38, 52-54.]
[Klinglesmith III, D.A.; Hanowell, J.; Risley, E.; Turk, J.; et al. (2014) Minor Planet Bull. 41, 139-143.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.419   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.683   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=1.51 deg.
U-B UB 0.237   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=1.51 deg.
Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

620 Drakonia (A906 UO)          Discovered 1906-Oct-26 by Metcalf, J. H. at Taunton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A906 UO = 1950 ET = 1950 HS = 1955 QE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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