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JPL Small-Body Database Browser
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1632 Siebohme (1941 DF)
Classification: Main-belt Asteroid          SPK-ID: 2001632
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1375662183232445 4.1198e-08  
a 2.654458259363238 1.0453e-08 au
q 2.289294474925736 1.0884e-07 au
i 5.71736171696968 4.4791e-06 deg
node 199.795927044828 4.1136e-05 deg
peri 127.0992124548712 4.3728e-05 deg
M 205.5365785673608 1.726e-05 deg
tp 2459278.274815383884
(2021-Mar-04.77481538)
7.7714e-05 TDB
period 1579.655113651648
4.32
9.3304e-06
2.555e-08
d
yr
n .2278978473774552 1.3461e-09 deg/d
Q 3.019622043800741 1.189e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2337  
   data-arc span      37118 days (101.62 yr)  
   first obs. used      1917-09-25  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45513  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:25:29  

Additional Information
 Earth MOID = 1.28273 au 
 Jupiter MOID = 2.32985 au 
 T_jup = 3.368 
[ 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 MPO473786  
diameter diameter 29.351 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 56.65 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:
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Carbognani, A. (2014) Minor Planet Bull. 41, 4-8.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.060   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1632 Siebohme (1941 DF)          Discovered 1941-Feb-26 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1941 DF = 1930 UJ = 1942 JC = 1947 RB = 1951 MN = 1956 TM = A917 SO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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