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JPL Small-Body Database Browser
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3805 Goldreich (1981 DK3)
Classification: Main-belt Asteroid          SPK-ID: 2003805
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1902683550400232 5.5428e-08  
a 2.683522081622122 1.1883e-08 au
q 2.172932749438302 1.4995e-07 au
i 11.8122605981437 4.7611e-06 deg
node 312.3177634902405 2.4881e-05 deg
peri 64.89046513465011 2.7534e-05 deg
M 44.8680261270439 1.045e-05 deg
tp 2458400.379928164718
(2018-Oct-08.87992816)
4.6736e-05 TDB
period 1605.669606608297
4.40
1.0665e-05
2.92e-08
d
yr
n .2242055267898099 1.4892e-09 deg/d
Q 3.194111413805942 1.4144e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1782  
   data-arc span      14185 days (38.84 yr)  
   first obs. used      1981-02-04  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45143  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:35:20  

Additional Information
 Earth MOID = 1.20222 au 
 Jupiter MOID = 2.39885 au 
 T_jup = 3.319 
[ 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 12.7   n/a MPO358666  
diameter diameter 12.9 km n/a DASTCOM value unverified
rotation period rot_per 4.841 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.1165   0.025 EAR-A-5-DDR-ALBEDOS-V1.0:IMPS IMPS quality code 2: from the PDS IMPS singleton file

3805 Goldreich (1981 DK3)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 DK3 = 1978 NK7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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