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428694 Saule (2008 OS9)
Classification: Apollo [NEO]          SPK-ID: 2428694
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 59 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .647811870501309 7.958e-08  
a 1.601561117993151 1.4733e-08 au
q .5640508144238403 1.248e-07 au
i 19.14004307367075 1.1575e-05 deg
node 133.4162963117984 8.9933e-06 deg
peri 288.3265677528473 1.4599e-05 deg
M 5.612800173406097 2.4784e-05 deg
tp 2459188.957741890151
(2020-Dec-05.45774189)
5.0814e-05 TDB
period 740.3101466596917
2.03
1.0215e-05
2.797e-08
d
yr
n .486282677097341 6.71e-09 deg/d
Q 2.639071421562462 2.4277e-08 au
  Orbit Determination Parameters
   # obs. used (total)      583  
   data-arc span      4667 days (12.78 yr)  
   first obs. used      2008-07-25  
   last obs. used      2021-05-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36336  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-06 06:01:50  

Additional Information
 Earth MOID = .0579153 au 
 Jupiter MOID = 2.9333 au 
 T_jup = 4.047 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456914.5 (2014-Sep-14.0) TDB
Reference: JPL 59 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6480793925009822 7.9665e-08  
q .5636457874420485 1.2478e-07 au
tp 2456967.994647197540
(2014-Nov-06.49464720)
2.7035e-05 TDB
node 133.5532166211723 9.0072e-06 deg
peri 288.2020852649611 1.4566e-05 deg
i 19.12423577996917 1.1577e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      583  
   data-arc span      4667 days (12.78 yr)  
   first obs. used      2008-07-25  
   last obs. used      2021-05-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36336  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-06 06:01:50  

Additional Information
 Jupiter MOID = 2.9333 au 
 T_jup = 4.047 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.346477045400772E-15 -9.936856517401834E-15 7.903637334152887E-14 1.405402052553752E-13 -8.81480081491438E-14 -3.29372634447323E-14
q -9.936856517401834E-15 1.557004683790741E-14 -4.306186862201376E-14 -2.225994595940612E-13 1.4874318116464E-13 4.611003597146121E-14
tp 7.903637334152887E-14 -4.306186862201376E-14 7.309034857110629E-10 -3.757124099839941E-11 2.206545370949199E-10 -3.198657857258343E-11
node 1.405402052553752E-13 -2.225994595940612E-13 -3.757124099839941E-11 8.11304482483987E-11 -9.330562373182548E-11 2.055136072182236E-11
peri -8.81480081491438E-14 1.4874318116464E-13 2.206545370949199E-10 -9.330562373182548E-11 2.12165760964582E-10 -1.8498690438425E-11
i -3.29372634447323E-14 4.611003597146121E-14 -3.198657857258343E-11 2.055136072182236E-11 -1.8498690438425E-11 1.340182024040122E-10

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 19.38   n/a MPCxxxxx  
rotation period rot_per 8.430 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:
[Cernis, K.; Eglitis, I.; Wlodarczyk, I.; Zdanavicius, J.; Zdanavicius, K. (2010) Baltic Astronomy 19, 235-263.]

428694 Saule (2008 OS9)          Discovered 2008-Jul-29 by Cernis, K., Eglitis, I. at Baldone
Reference: Last Updated: 2015-03-09

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