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2774 Tenojoki (1942 TJ)
Classification: Main-belt Asteroid          SPK-ID: 2002774
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1409962806738908 3.7362e-08  
a 3.182934520140342 1.817e-08 au
q 2.734152591172018 1.1832e-07 au
i 8.527935647890756 4.3385e-06 deg
node 290.9410299395748 2.8596e-05 deg
peri 108.2227841919312 3.2854e-05 deg
M 145.0717419878829 1.702e-05 deg
tp 2457764.665470311602
(2017-Jan-11.16547031)
9.5317e-05 TDB
period 2074.149152444559
5.68
1.776e-05
4.862e-08
d
yr
n .1735651457734897 1.4862e-09 deg/d
Q 3.631716449108665 2.0732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2071  
   data-arc span      28004 days (76.67 yr)  
   first obs. used      1942-09-08  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43865  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 22:20:02  

Additional Information
 Earth MOID = 1.75718 au 
 Jupiter MOID = 1.83525 au 
 T_jup = 3.166 
[ 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 11.3   n/a MPO347542  
diameter diameter 35.697 km 0.386 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.2 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. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.033   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2774 Tenojoki (1942 TJ)          Discovered 1942-Oct-03 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1942 TJ = 1948 TO1 = 1981 LE = 2000 XO55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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