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1805 Dirikis (1970 GD)
Classification: Main-belt Asteroid          SPK-ID: 2001805
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1111109164046608 4.0939e-08  
a 3.139808407828612 1.4381e-08 au
q 2.790941418299716 1.3034e-07 au
i 2.515755174216205 3.8729e-06 deg
node 78.92496026527235 9.6468e-05 deg
peri 86.56659954641786 9.8197e-05 deg
M 341.4578773152858 1.7623e-05 deg
tp 2458705.167077616354
(2019-Aug-09.66707762)
9.9563e-05 TDB
period 2032.137775301755
5.56
1.3962e-05
3.823e-08
d
yr
n .1771533428369753 1.2171e-09 deg/d
Q 3.488675397357508 1.5979e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2569  
   data-arc span      25046 days (68.57 yr)  
   first obs. used      1950-10-15  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44501  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:27:25  

Additional Information
 Earth MOID = 1.80016 au 
 Jupiter MOID = 1.48708 au 
 T_jup = 3.200 
[ 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 11.4   n/a MPO347531  
diameter diameter 28.098 km 0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 23.0 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
geometric albedo albedo 0.089   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1805 Dirikis (1970 GD)          Discovered 1970-Apr-01 by Chernykh, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1970 GD = 1942 EJ = 1948 JH = 1948 JM = 1950 TU1 = 1953 EL = 1955 QL1 = 1959 JP = 1962 WP = 1962 XC1 = 1964 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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