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118413 (1999 SP1)
Classification: Main-belt Asteroid          SPK-ID: 2118413
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .189522784685159 6.1943e-08  
a 3.127702684073709 2.8354e-08 au
q 2.534931761720813 1.9006e-07 au
i 13.30773673127475 7.1742e-06 deg
node 212.1252650433797 2.3921e-05 deg
peri 236.1473339912402 2.8411e-05 deg
M 247.6308664074034 1.8436e-05 deg
tp 2459831.139475872506
(2022-Sep-08.63947587)
0.00010726 TDB
period 2020.396563145343
5.53
2.7473e-05
7.522e-08
d
yr
n .1781828412138822 2.4229e-09 deg/d
Q 3.720473606426604 3.3727e-08 au
  Orbit Determination Parameters
   # obs. used (total)      383  
   data-arc span      9330 days (25.54 yr)  
   first obs. used      1994-11-28  
   last obs. used      2020-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55383  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:57:10  

Additional Information
 Earth MOID = 1.57774 au 
 Jupiter MOID = 1.74444 au 
 T_jup = 3.145 
[ 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 15.23   n/a MPCxxxxx  
diameter diameter 5.289 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118413 (1999 SP1)          Discovered 1999-Sep-19 by Sarounova, L. at Ondrejov
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1999 SP1 = 1994 WO8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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