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18632 Danielsson (1998 DN37)
Classification: Main-belt Asteroid          SPK-ID: 2018632
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1245713184007958 4.6289e-08  
a 2.931980967078013 1.6709e-08 au
q 2.566740232483065 1.4196e-07 au
i 3.815963585439976 4.1423e-06 deg
node 127.5810195064076 6.7834e-05 deg
peri 216.4608479294618 6.975e-05 deg
M 356.3385393997922 1.7391e-05 deg
tp 2459019.150565798035
(2020-Jun-18.65056580)
8.8642e-05 TDB
period 1833.750085119476
5.02
1.5676e-05
4.292e-08
d
yr
n .1963190092921221 1.6782e-09 deg/d
Q 3.297221701672961 1.8791e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1129  
   data-arc span      10880 days (29.79 yr)  
   first obs. used      1990-10-19  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56324  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:21:32  

Additional Information
 Earth MOID = 1.56013 au 
 Jupiter MOID = 2.09269 au 
 T_jup = 3.261 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO435872  
diameter diameter 6.927 km 0.236 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.225 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.070   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18632 Danielsson           Discovered 1998 Feb. 28 by C.-I. Lagerkvist at the European Southern Observatory.
Ann-Kristin "Kikki" Danielsson (b. 1952) is a well-known and popular country singer from Sweden.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-10-05Last Updated: 2017-10-09

Alternate Designations
 1998 DN37 = 1985 UY2 = 1993 FD11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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