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JPL Small-Body Database Browser
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2091 Sampo (1941 HO)
Classification: Main-belt Asteroid          SPK-ID: 2002091
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06068926915329952 4.2587e-08  
a 3.013024867199291 1.6676e-08 au
q 2.830166590068249 1.2639e-07 au
i 11.37954298331883 4.5533e-06 deg
node 114.5303143361398 2.573e-05 deg
peri 318.6180032900933 5.0398e-05 deg
M 112.8960040688221 4.3561e-05 deg
tp 2458001.428622151722
(2017-Sep-04.92862215)
0.00023042 TDB
period 1910.304069698594
5.23
1.5859e-05
4.342e-08
d
yr
n .1884516741132214 1.5645e-09 deg/d
Q 3.195883144330333 1.7688e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2346  
   data-arc span      34900 days (95.55 yr)  
   first obs. used      1924-01-28  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4366  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:22:17  

Additional Information
 Earth MOID = 1.85647 au 
 Jupiter MOID = 1.98416 au 
 T_jup = 3.216 
[ 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 10.4   n/a MPO473792  
diameter diameter 23.024 km 0.474 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 71.34 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. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.277   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2091 Sampo           Discovered 1941 Apr. 26 by Y. Vaisala at Turku.
Named for the wonder-object in Kalevala, the Finnish national epic. Sampo was to produce every kind of fortune. When Kalevala and Pohjola (the North) were fighting for its possession, out at sea, it broke into pieces, and only tiny fragments could be found.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5450Last Updated: 2006-03-21

[ show close-approach data ]
Alternate Designations
 1941 HO = 1931 MG = 1938 UF1 = 1951 GA1 = 1952 LB = 1956 EP = 1971 BH1 = 1978 NB = A924 BB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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