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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1060523766268215 3.6435e-08  
a 2.22136703331701 6.7623e-09 au
q 1.985785780073269 8.1621e-08 au
i 4.57496523336963 3.108e-06 deg
node 100.9608433952282 4.7412e-05 deg
peri 295.3869505340498 4.9491e-05 deg
M 136.4373983720429 1.4739e-05 deg
tp 2458142.189466206010
(2018-Jan-23.68946621)
4.9105e-05 TDB
period 1209.285680718787
3.31
5.522e-06
1.512e-08
d
yr
n .2976964051918813 1.3594e-09 deg/d
Q 2.456948286560751 7.4795e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2760  
   data-arc span      31991 days (87.59 yr)  
   first obs. used      1931-10-10  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41716  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:31:35  

Additional Information
 Earth MOID = .997444 au 
 Jupiter MOID = 2.89432 au 
 T_jup = 3.638 
[ 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-January); 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]
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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