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1669 Dagmar (1934 RS)
Classification: Main-belt Asteroid          SPK-ID: 2001669
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1099282519806723 3.4175e-08  
a 3.14070621239014 1.3823e-08 au
q 2.795453868477254 1.0891e-07 au
i .9401263386394162 3.7917e-06 deg
node 18.95886709978316 0.00022235 deg
peri 178.4114151123856 0.00022299 deg
M 303.4275755206855 1.83e-05 deg
tp 2459319.978537606861
(2021-Apr-15.47853761)
0.00010406 TDB
period 2033.009449339121
5.57
1.3422e-05
3.675e-08
d
yr
n .1770773864907646 1.169e-09 deg/d
Q 3.485958556303027 1.5342e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3101  
   data-arc span      31196 days (85.41 yr)  
   first obs. used      1934-09-07  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42864  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:01:34  

Additional Information
 Earth MOID = 1.79363 au 
 Jupiter MOID = 1.472 au 
 T_jup = 3.201 
[ 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 10.8   n/a MPO502169 IRAS observations used: 17
diameter diameter 42.377 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.035   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
B-V BV 0.730   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.16 deg.
U-B UB 0.460   0.045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.16 deg.
Tholen spectral type spec_T G:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

1669 Dagmar (1934 RS)          Discovered 1934-Sep-07 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1934 RS = 1943 GE = 1950 PX = 1953 AD = 1957 WA = 1959 CV = 1962 RH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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