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173740 (2001 QX287)
Classification: Main-belt Asteroid          SPK-ID: 2173740
[ 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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1197730888333315 5.222e-08  
a 2.983483409043006 2.3591e-08 au
q 2.626142385658928 1.629e-07 au
i 10.89185445168547 5.8789e-06 deg
node 329.9892810885401 2.1946e-05 deg
peri 345.5993126624587 2.9295e-05 deg
M 291.8748203541062 2.2425e-05 deg
tp 2459556.695991101853
(2021-Dec-08.19599110)		 0.00011966 TDB
period 1882.278438944212
5.15		 2.2326e-05
6.113e-08		 d
yr
n .1912575698428163 2.2685e-09 deg/d
Q 3.340824432427085 2.6417e-08 au
   Orbit Determination Parameters
   # obs. used (total)      606  
   data-arc span      6874 days (18.82 yr)  
   first obs. used      2001-07-22  
   last obs. used      2020-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57608  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:58:18  

Additional Information
 Earth MOID = 1.61246 au 
 Jupiter MOID = 1.9806 au 
 T_jup = 3.221 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457217.5 (2015-Jul-14.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1182815830563896 5.2227e-08  
q 2.631520235896279 1.6269e-07 au
tp 2457673.102261697163
(2016-Oct-11.60226170)		 0.00010935 TDB
node 330.0132619889741 2.195e-05 deg
peri 345.5654899484785 2.9449e-05 deg
i 10.88909471676036 5.8773e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      606  
   data-arc span      6874 days (18.82 yr)  
   first obs. used      2001-07-22  
   last obs. used      2020-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57608  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:58:18  

Additional Information
 Jupiter MOID = 1.9806 au 
 T_jup = 3.221 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.7276840331799E-15 -8.432355787938691E-15 1.400404463514468E-13 -5.358071680490958E-15 7.250504541183901E-14 2.065084165778848E-15
q -8.432355787938691E-15 2.646945084630925E-14 5.82459665481743E-13 1.839351118715875E-14 -6.643233772338805E-14 -5.192828478870136E-15
tp 1.400404463514468E-13 5.82459665481743E-13 1.195779533420585E-8 -1.517068563315316E-11 2.158232220482889E-9 -3.629847796401877E-12
node -5.358071680490958E-15 1.839351118715875E-14 -1.517068563315316E-11 4.817950340559822E-10 -4.753531995484638E-10 3.792307696509312E-12
peri 7.250504541183901E-14 -6.643233772338805E-14 2.158232220482889E-9 -4.753531995484638E-10 8.672337506638648E-10 -4.398794432792325E-12
i 2.065084165778848E-15 -5.192828478870136E-15 -3.629847796401877E-12 3.792307696509312E-12 -4.398794432792325E-12 3.454298628586211E-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 14.93   n/a E2021B55  
diameter diameter 3.828 km 0.954 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.159   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173740 (2001 QX287)          Discovered 2001-Aug-17 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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