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487474 (2014 SG172)
Classification: Main-belt Asteroid          SPK-ID: 2487474
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .132846584318175 6.5586e-08  
a 3.066552316227217 5.7055e-08 au
q 2.659171315383444 1.9287e-07 au
i 1.548241199753656 7.4455e-06 deg
node 141.8922762285305 0.00027839 deg
peri 132.0005106279557 0.00027999 deg
M 129.3059345023283 3.3763e-05 deg
tp 2458495.985475955726
(2019-Jan-12.48547596)
0.00017398 TDB
period 1961.435332663496
5.37
5.474e-05
1.499e-07
d
yr
n .1835390614235262 5.1223e-09 deg/d
Q 3.473933317070991 6.4634e-08 au
  Orbit Determination Parameters
   # obs. used (total)      78  
   data-arc span      5023 days (13.75 yr)  
   first obs. used      2007-03-09  
   last obs. used      2020-12-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .71406  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 17:21:29  

Additional Information
 Earth MOID = 1.64133 au 
 Jupiter MOID = 1.63185 au 
 T_jup = 3.218 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457518.5 (2016-May-10.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1343407077961753 6.507e-08  
q 2.653268665321283 1.9139e-07 au
tp 2456539.511190801767
(2013-Sep-04.01119080)
0.00015612 TDB
node 141.9449219637972 0.00027848 deg
peri 132.7503854970954 0.00028008 deg
i 1.548081360204219 7.448e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      78  
   data-arc span      5023 days (13.75 yr)  
   first obs. used      2007-03-09  
   last obs. used      2020-12-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .71406  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 17:21:29  

Additional Information
 Jupiter MOID = 1.63185 au 
 T_jup = 3.218 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.234053936416544E-15 -1.20685862596407E-14 -1.51788714870882E-13 -1.408360405140453E-14 8.467962292040754E-14 -6.481357387964647E-16
q -1.20685862596407E-14 3.662977101426942E-14 1.642270640983603E-12 4.063090266046553E-14 1.934427970999462E-13 2.267584199817464E-15
tp -1.51788714870882E-13 1.642270640983603E-12 2.437341500045608E-8 2.587293961725388E-11 4.674305266584822E-9 4.188503275471922E-13
node -1.408360405140453E-14 4.063090266046553E-14 2.587293961725388E-11 7.755200683863211E-8 -7.751917461815696E-8 1.146741646852853E-10
peri 8.467962292040754E-14 1.934427970999462E-13 4.674305266584822E-9 -7.751917461815696E-8 7.844247348343215E-8 -1.145366318729709E-10
i -6.481357387964647E-16 2.267584199817464E-15 4.188503275471922E-13 1.146741646852853E-10 -1.145366318729709E-10 5.547196414206892E-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 16.98   n/a MPCxxxxx  

487474 (2014 SG172)          Discovered 2012-Feb-16 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2017-03-14

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