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JPL Small-Body Database Browser
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382157 (2012 GS18)
Classification: Main-belt Asteroid          SPK-ID: 2382157
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2028834297533026 5.6023e-08  
a 2.200110488754376 2.5022e-08 au
q 1.753744526959673 1.0948e-07 au
i 6.980016569348042 5.8313e-06 deg
node 84.77641415804247 6.5192e-05 deg
peri 155.1025967363636 6.8681e-05 deg
M 149.9025576402508 2.5212e-05 deg
tp 2458504.168651626842
(2019-Jan-20.66865163)
8.0373e-05 TDB
period 1191.969558272294
3.26
2.0334e-05
5.567e-08
d
yr
n .3020211359439445 5.1523e-09 deg/d
Q 2.646476450549078 3.0098e-08 au
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      5329 days (14.59 yr)  
   first obs. used      2005-01-18  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53075  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:59:25  

Additional Information
 Earth MOID = .743751 au 
 Jupiter MOID = 2.37163 au 
 T_jup = 3.629 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457497.5 (2016-Apr-19.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2026052459384494 5.6013e-08  
q 1.754635761507441 1.0943e-07 au
tp 2457312.005071794747
(2015-Oct-16.50507179)
7.6518e-05 TDB
node 84.78688061214591 6.5212e-05 deg
peri 155.1178261520726 6.8707e-05 deg
i 6.978730585183614 5.8286e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      5329 days (14.59 yr)  
   first obs. used      2005-01-18  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53075  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:59:25  

Additional Information
 Jupiter MOID = 2.37163 au 
 T_jup = 3.629 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.137457962252763E-15 -6.08213021074712E-15 1.917282771332797E-13 -2.556425763846065E-14 1.400638342605561E-13 -2.093633471140513E-15
q -6.08213021074712E-15 1.197595813791698E-14 -3.198454764338792E-13 5.109999882294173E-14 -2.469888476557507E-13 3.487705362764697E-15
tp 1.917282771332797E-13 -3.198454764338792E-13 5.854949264654812E-9 8.813276629420453E-11 1.727854656074436E-9 7.741719721229988E-12
node -2.556425763846065E-14 5.109999882294173E-14 8.813276629420453E-11 4.252657515285254E-9 -4.195655896121099E-9 1.948724460335436E-10
peri 1.400638342605561E-13 -2.469888476557507E-13 1.727854656074436E-9 -4.195655896121099E-9 4.720693925812651E-9 -1.911848741638451E-10
i -2.093633471140513E-15 3.487705362764697E-15 7.741719721229988E-12 1.948724460335436E-10 -1.911848741638451E-10 3.397213895221451E-11

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 17.5   n/a MPO434368  

382157 (2012 GS18)          Discovered 2005-Jan-18 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-12-19

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1900-Jul-01 16:49 < 00:01 Eunom 0.0252571681754663 0.0251703611832571 0.0253463052893844 8.84522647731938 8.84522641448458 2415202.200480201 0.647028187069545 12868.9036762864 108.502507286804 70.0787040966611 32731.6523145334 T 12 CATAB v2.0f-lin.ifort 2019-Sep-24 06:59:26 2019-Sep-24 06:59
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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