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251346 (2007 SJ)
Classification: Apollo [NEO, PHA]          SPK-ID: 2251346
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 173 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5342870572243043 1.0414e-08  
a 2.014586950217768 1.9698e-08 au
q .9382192170634306 1.7705e-08 au
i 8.196067421255933 3.7974e-06 deg
node 306.8206661529628 2.0493e-05 deg
peri 174.9956856666349 2.2251e-05 deg
M 80.34090437258349 1.2078e-05 deg
tp 2458767.416427007601
(2019-Oct-10.91642701)
3.165e-05 TDB
period 1044.425463374522
2.86
1.5318e-05
4.194e-08
d
yr
n .3446871151885227 5.0554e-09 deg/d
Q 3.090954683372105 3.0222e-08 au
  Orbit Determination Parameters
   # obs. used (total)      965  
   # delay obs. used      2  
   # Doppler obs. used      0  
   data-arc span      10601 days (29.02 yr)  
   first obs. used      1990-10-14  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36479  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-21 06:14:53  

Additional Information
 Earth MOID = .043525 au 
 Jupiter MOID = 2.01367 au 
 T_jup = 3.624 
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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 16.8   n/a MPO437168  
rotation period rot_per 2.718 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Hicks, M.; Ebelhar, S.. (2014) Astronomer's Telegram 5801. http://www.astronomerstelegram.org]
[Warner, B.D. (2014) Minor Planet Bull. 41, 113-124.]
[Gorshanov, D.; Devyatkin, A.; Martyusheva, A.; Bekyashev, R. (2015) Minor Planet Bull. 42, 246-247.]
[Vaduvescu, O.; Aznar Macias, A.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.]

251346 (2007 SJ)          Discovered 2007-Sep-17 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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