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2195 Tengstrom (1941 SP1)
Classification: Main-belt Asteroid          SPK-ID: 2002195
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1053801061827546 3.3511e-08  
a 2.222630063961591 6.3879e-09 au
q 1.988409071816336 7.5478e-08 au
i 4.574960841737545 3.0003e-06 deg
node 100.9588865744554 4.4492e-05 deg
peri 295.2651918030787 4.6624e-05 deg
M 255.5879128216673 1.4812e-05 deg
tp 2459351.532623695879
(2021-May-17.03262370)
5.0248e-05 TDB
period 1210.317195505128
3.31
5.2177e-06
1.429e-08
d
yr
n .2974426880300197 1.2823e-09 deg/d
Q 2.456851056106846 7.0611e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3068  
   data-arc span      32443 days (88.82 yr)  
   first obs. used      1931-10-10  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40269  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:46:57  

Additional Information
 Earth MOID = 1.00066 au 
 Jupiter MOID = 2.89267 au 
 T_jup = 3.637 
[ 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 12.4   n/a MPO337265  
diameter diameter 8.627 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.82112 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Higgins, D.; Pravec, P.; Kusnirak, P.; Galad, A.; et al. (2006) Minor Planet Bull. 33, 89-91.]
[Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/asteroid/lightcurves.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.343   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2195 Tengstrom (1941 SP1)          Discovered 1941-Sep-27 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1941 SP1 = 1931 TC3 = 1934 PQ = 1936 DF = 1943 GT = 1944 QD = 1951 VA = 1973 GC1 = 1974 RC2 = 1976 GO4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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