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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05957943067680267 4.1267e-08  
a 3.01615220959046 1.5519e-08 au
q 2.83645157810848 1.2351e-07 au
i 11.38078896421341 4.3898e-06 deg
node 114.5180665905298 2.3583e-05 deg
peri 318.8283146226443 4.6717e-05 deg
M 188.0531861208474 4.1789e-05 deg
tp 2459914.339530186941
(2022-Nov-30.83953019)
0.00022463 TDB
period 1913.279016024767
5.24
1.4767e-05
4.043e-08
d
yr
n .1881586517098664 1.4522e-09 deg/d
Q 3.19585284107244 1.6444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2586  
   data-arc span      35255 days (96.52 yr)  
   first obs. used      1924-01-28  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42337  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:45:45  

Additional Information
 Earth MOID = 1.86273 au 
 Jupiter MOID = 1.98077 au 
 T_jup = 3.215 
[ 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-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:
[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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2021-Apr-02 22:50 < 00:01 Jupiter 1.97948775785389 1.97948735154025 1.97948816416753 4.11372980997238 4.00836291374632 2459307.451670876 0.291364862874519 47.5500861664502 17.5752452358173 83.5934291440722 3739034.34739086 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:45:59 2020-Aug-24 22:46
2068-Jan-31 08:28 00:01 Jupiter 1.9997085055635 1.99970802027938 1.99970899084796 4.1498992516818 4.0465439345359 2476411.852856603 1.26391513099345 94.1054746063902 19.6493832852564 -83.3419322646518 3944945.52485156 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:45:59 2020-Aug-24 22:46
2199-Apr-05 08:21 00:04 Jupiter 1.97930965789958 1.97930925820516 1.97931005759444 4.04486264481946 3.93764359848853 2524322.847985005 4.2770146255794 305.389656111379 17.4939931756896 88.7994291019682 3713512.3237415 T 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:45:59 2020-Aug-24 22:46

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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