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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3516500603266965 5.7544e-07  
a 2.695030439800949 8.1515e-08 au
q 1.747322823062662 1.5011e-06 au
i 10.03992290415403 1.9524e-05 deg
node 23.38957305144731 6.7729e-05 deg
peri 25.02009712524359 9.9374e-05 deg
M 326.4262345911394 2.9627e-05 deg
tp 2458751.209798737445
(2019-Sep-24.70979874)
0.00013729 TDB
period 1616.009610026093
4.42
7.3318e-05
2.007e-07
d
yr
n .2227709524537959 1.0107e-08 deg/d
Q 3.642738056539237 1.1018e-07 au
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      5318 days (14.56 yr)  
   first obs. used      2001-09-11  
   last obs. used      2016-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63242  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 12:26:35  

Additional Information
 Earth MOID = .761722 au 
 Jupiter MOID = 1.81238 au 
 T_jup = 3.258 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456062.5 (2012-May-15.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3481115399091553 5.6828e-07  
q 1.759632091390576 1.4753e-06 au
tp 2455509.427824570705
(2010-Nov-08.92782457)
0.00014891 TDB
node 23.50102696082269 6.7696e-05 deg
peri 24.54111086519513 0.0001005 deg
i 10.0403322110454 1.9546e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      5318 days (14.56 yr)  
   first obs. used      2001-09-11  
   last obs. used      2016-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63242  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 12:26:35  

Additional Information
 Jupiter MOID = 1.81238 au 
 T_jup = 3.258 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.229456745365916E-13 -8.383031933603716E-13 -6.785863626271508E-11 3.554809321556348E-12 -4.034160447314269E-11 -1.034220767604565E-12
q -8.383031933603716E-13 2.176394819295623E-12 1.773299836493438E-10 -9.207854307223135E-12 1.050068555699023E-10 2.671511415500392E-12
tp -6.785863626271508E-11 1.773299836493438E-10 2.217313257900299E-8 -7.341594782846227E-10 1.065123440312091E-8 1.748269560416548E-10
node 3.554809321556348E-12 -9.207854307223135E-12 -7.341594782846227E-10 4.582702287594266E-9 -4.908170852812552E-9 -8.30649456434739E-10
peri -4.034160447314269E-11 1.050068555699023E-10 1.065123440312091E-8 -4.908170852812552E-9 1.009943343779196E-8 9.227747753084991E-10
i -1.034220767604565E-12 2.671511415500392E-12 1.748269560416548E-10 -8.30649456434739E-10 9.227747753084991E-10 3.820362604557874E-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 17.3   n/a MPO377725  
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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