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79360 Sila-Nunam (1997 CS29)
Classification: TransNeptunian Object          SPK-ID: 2079360
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .00859068576229738 7.2433e-06  
a 43.64385317326769 0.00088119 au
q 43.2689225452003 0.0006134 au
i 2.257258728052145 3.9244e-05 deg
node 304.4600185195947 0.00024164 deg
peri 256.5146628302575 0.093753 deg
M 303.2974227427414 0.093467 deg
tp 2475588.092364737062
26.842 TDB
period 105313.2598226108
n .003418372962781537 1.0353e-07 deg/d
Q 44.01878380133508 0.00088876 au
  Orbit Determination Parameters
   # obs. used (total)      509  
   data-arc span      8663 days (23.72 yr)  
   first obs. used      1997-02-03  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .50895  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:23:32  

Additional Information
 Earth MOID = 42.2669 au 
 Jupiter MOID = 37.8188 au 
 T_jup = 5.907 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 5.3   n/a MPO385313  
rotation period rot_per 300.24 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:
[Grundy, W.M.; Benecchi, S.D.; Rabinowitz, D.L.; Porter, S.B.; et al. (2012) Icarus 220, 74-83.]
[Rabinowitz, D.L.; Benecchi, S.D.; Grundy, W.M.; Verbiscer, A.J. (2014) Icarus 236, 72-82.]

79360 Sila-Nunam           Discovered 1997 Feb. 3 by J. X. Luu, D. C. Jewitt, C. A. Trujillo and J. Chen at Mauna Kea.
Sila is the Inuit god of the sky, weather, and life force. Nunam is the Earth goddess, Sila's wife. Nunam created the land animals and, in some traditions, the Inuit people (in other traditions Sila created the first people out of wet sand). Sila breathed life into the Inuit.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120109/MPCPages.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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