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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1403354002082378 3.6136e-08  
a 3.184879896001205 1.7527e-08 au
q 2.737928501180705 1.1534e-07 au
i 8.528166265019427 4.0631e-06 deg
node 290.9343895039431 2.7384e-05 deg
peri 108.0595230268792 3.1305e-05 deg
M 214.6873062207628 1.6766e-05 deg
tp 2459838.490449369011
(2022-Sep-15.99044937)
0.00010041 TDB
period 2076.050989951082
5.68
1.7138e-05
4.692e-08
d
yr
n .1734061454860907 1.4315e-09 deg/d
Q 3.631831290821705 1.9987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2372  
   data-arc span      28453 days (77.90 yr)  
   first obs. used      1942-09-08  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43122  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:56:12  

Additional Information
 Earth MOID = 1.76149 au 
 Jupiter MOID = 1.83576 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-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. (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

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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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