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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1390907655267896 1.7731e-08  
a 3.191346180356715 1.445e-08 au
q 2.747459397069904 5.9932e-08 au
i 8.519726587266865 1.3343e-06 deg
node 290.9351718404045 4.9818e-06 deg
peri 107.2904767051282 8.8582e-06 deg
M 283.9923982156872 7.32e-06 deg
tp 2459836.156836771100
(2022-Sep-13.65683677)
4.3521e-05 TDB
period 2082.376729721562
5.70
1.4143e-05
3.872e-08
d
yr
n .1728793809793179 1.1741e-09 deg/d
Q 3.635232963643526 1.6459e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2715  
   data-arc span      28825 days (78.92 yr)  
   first obs. used      1942-09-08  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41199  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 09:00:51  

Additional Information
 Earth MOID = 1.7703 au 
 Jupiter MOID = 1.83734 au 
 T_jup = 3.164 
[ 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 11.43   n/a MPO614063  
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. 2020-October); 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]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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