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JPL Small-Body Database Browser
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461389 (2001 RE61)
Classification: Main-belt Asteroid          SPK-ID: 2461389
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3518061389093838 2.5561e-07  
a 2.695430303120167 2.3616e-08 au
q 1.747161375480111 6.7623e-07 au
i 10.03946112510115 1.2658e-05 deg
node 23.38358107803698 4.9584e-05 deg
peri 25.00684617956416 6.4872e-05 deg
M 55.52972756047949 1.6115e-05 deg
tp 2458751.176262426996
(2019-Sep-24.67626243)
7.3247e-05 TDB
period 1616.369275871638
4.43
2.1243e-05
5.816e-08
d
yr
n .222721382653025 2.927e-09 deg/d
Q 3.643699230760223 3.1924e-08 au
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      6716 days (18.39 yr)  
   first obs. used      2001-09-11  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60478  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 12:39:06  

Additional Information
 Earth MOID = .762064 au 
 Jupiter MOID = 1.81338 au 
 T_jup = 3.257 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456967.5 (2014-Nov-06.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3476498685388394 2.5197e-07  
q 1.761071180954965 6.6267e-07 au
tp 2457130.124116522419
(2015-Apr-17.62411652)
9.3684e-05 TDB
node 23.47115656698308 4.9557e-05 deg
peri 24.63598052829134 6.5615e-05 deg
i 10.03538951122209 1.2656e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      6716 days (18.39 yr)  
   first obs. used      2001-09-11  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60478  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 12:39:06  

Additional Information
 Jupiter MOID = 1.81338 au 
 T_jup = 3.257 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.349128852158731E-14 -1.669618811638668E-13 -1.884720000408703E-11 -1.837985372870003E-13 -9.94717799575681E-12 -1.052937062334024E-13
q -1.669618811638668E-13 4.3912887508966E-13 4.970606326843256E-11 4.860550312832307E-13 2.618536104484386E-11 2.750151195049197E-13
tp -1.884720000408703E-11 4.970606326843256E-11 8.776693663284124E-9 6.681985423484378E-11 3.964095275481245E-9 1.248536046570143E-11
node -1.837985372870003E-13 4.860550312832307E-13 6.681985423484378E-11 2.455892924928163E-9 -2.38124939264392E-9 -1.987336522063722E-10
peri -9.94717799575681E-12 2.618536104484386E-11 3.964095275481245E-9 -2.38124939264392E-9 4.305271046747598E-9 2.055367935642867E-10
i -1.052937062334024E-13 2.750151195049197E-13 1.248536046570143E-11 -1.987336522063722E-10 2.055367935642867E-10 1.601762099520375E-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 17.2   n/a MPO495307  
diameter diameter 2.313 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

461389 (2001 RE61)          Discovered 2001-Sep-12 by LINEAR at Socorro
Reference: Last Updated: 2016-03-24

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