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187098 (2005 QS20)
Classification: Main-belt Asteroid          SPK-ID: 2187098
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1821334414101 3.9935e-08  
a 2.791594955434295 1.6751e-08 au
q 2.283152159177972 1.092e-07 au
i 5.884277073191464 5.5384e-06 deg
node 129.1601969680105 3.6877e-05 deg
peri 244.3988336789209 4.002e-05 deg
M 125.0929151717685 1.3486e-05 deg
tp 2458804.519710360649
(2019-Nov-17.01971036)
6.4179e-05 TDB
period 1703.636884451331
4.66
1.5334e-05
4.198e-08
d
yr
n .2113126355067974 1.9019e-09 deg/d
Q 3.300037751690618 1.9802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      341  
   data-arc span      8429 days (23.08 yr)  
   first obs. used      1998-01-22  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52215  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:54:00  

Additional Information
 Earth MOID = 1.2901 au 
 Jupiter MOID = 2.18444 au 
 T_jup = 3.297 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457464.5 (2016-Mar-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1836963085960709 4.0858e-08  
q 2.277048859121831 1.1206e-07 au
tp 2457094.457013371577
(2015-Mar-12.95701337)
6.5075e-05 TDB
node 129.456478854741 3.6849e-05 deg
peri 242.9187604231419 3.9843e-05 deg
i 5.888100642099356 5.5455e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      341  
   data-arc span      8429 days (23.08 yr)  
   first obs. used      1998-01-22  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52215  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:54:00  

Additional Information
 Jupiter MOID = 2.18444 au 
 T_jup = 3.297 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.669370804653107E-15 -4.547306641378062E-15 -1.137483870413514E-12 1.055377371337485E-14 -2.425875955723495E-13 -3.255064413108472E-15
q -4.547306641378062E-15 1.255654470802225E-14 2.937626059065902E-12 -2.913030230954599E-14 6.3135143227021E-13 9.732134529456911E-15
tp -1.137483870413514E-12 2.937626059065902E-12 4.234735454459953E-9 -1.040775838678433E-11 9.949176989443835E-10 5.17108678730149E-12
node 1.055377371337485E-14 -2.913030230954599E-14 -1.040775838678433E-11 1.357879488512414E-9 -1.352618944437029E-9 2.689157550770402E-11
peri -2.425875955723495E-13 6.3135143227021E-13 9.949176989443835E-10 -1.352618944437029E-9 1.587487624481099E-9 -2.568959257503276E-11
i -3.255064413108472E-15 9.732134529456911E-15 5.17108678730149E-12 2.689157550770402E-11 -2.568959257503276E-11 3.07529166451808E-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 16.19   n/a MPCxxxxx  

187098 (2005 QS20)          Discovered 2005-Aug-26 by LONEOS at Anderson Mesa
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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