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6223 Dahl (1980 RD1)
Classification: Main-belt Asteroid          SPK-ID: 2006223
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1209675923051674 4.2548e-08  
a 2.736051029971137 1.2719e-08 au
q 2.405077524451455 1.1803e-07 au
i 3.857527841036033 3.7607e-06 deg
node 294.3075539011738 6.802e-05 deg
peri 75.83796014572424 6.9768e-05 deg
M 257.1471679136409 1.7715e-05 deg
tp 2459472.778821046072
(2021-Sep-15.27882105)
8.3212e-05 TDB
period 1653.045153232442
4.53
1.1526e-05
3.156e-08
d
yr
n .2177798950597563 1.5186e-09 deg/d
Q 3.067024535490819 1.4257e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2053  
   data-arc span      25701 days (70.37 yr)  
   first obs. used      1949-12-14  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47924  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:31:34  

Additional Information
 Earth MOID = 1.40806 au 
 Jupiter MOID = 2.41893 au 
 T_jup = 3.338 
[ 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 MPO473852  
diameter diameter 19.634 km 0.326 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.33 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:
[Waller, E.B. (2013) Minor Planet Bull. 40, 109-110.]
geometric albedo albedo 0.033   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6223 Dahl           Discovered 1980 Sept. 3 by A. Mrkos at Klet.
Named in honor of the Welsh-born author Roald Dahl (b. 1916). His Willy Wonka and the Chocolate Factory and James and the Giant Peach are classics of children's literature. Name suggested by G. V. Williams, who made the identifications involving this object.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19960828/MPCPages.arcLast Updated: 2003-09-26

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Alternate Designations
 1980 RD1 = 1949 XC = 1972 YS = 1976 UV3 = 1982 BH9 = 1991 AK3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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