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JPL Small-Body Database Browser
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1611 Beyer (1950 DJ)
Classification: Main-belt Asteroid          SPK-ID: 2001611
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1615291406804228 3.659e-08  
a 3.176434574859178 1.5357e-08 au
q 2.663347827554591 1.1833e-07 au
i 4.279805968378018 3.8453e-06 deg
node 237.5419938376102 5.8606e-05 deg
peri 75.27059955925358 5.9912e-05 deg
M 325.5189923870066 1.411e-05 deg
tp 2459198.554970593511
(2020-Dec-15.05497059)
8.1664e-05 TDB
period 2067.798894217812
5.66
1.4995e-05
4.105e-08
d
yr
n .1740981683502532 1.2625e-09 deg/d
Q 3.689521322163765 1.7837e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2265  
   data-arc span      25285 days (69.23 yr)  
   first obs. used      1950-02-17  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48078  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:25:15  

Additional Information
 Earth MOID = 1.65346 au 
 Jupiter MOID = 1.61234 au 
 T_jup = 3.176 
[ 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 11.8   n/a MPO347529  
diameter diameter 24.444 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 13.29 h n/a LCDB (Rev. 2019-August); 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. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.062   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1611 Beyer (1950 DJ)          Discovered 1950-Feb-17 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1950 DJ = 1958 RE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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