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109724 (2001 RS55)
Classification: Main-belt Asteroid          SPK-ID: 2109724
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 .1261251691107717 4.1774e-08  
a 2.452333385219868 1.2785e-08 au
q 2.143032422293021 1.082e-07 au
i 10.39458422103973 4.692e-06 deg
node 144.8653417842332 2.2237e-05 deg
peri 283.6688564771976 3.1962e-05 deg
M 301.3233002734395 2.6552e-05 deg
tp 2459429.128765222750
(2021-Aug-02.62876522)		 0.0001045 TDB
period 1402.709352498456
3.84		 1.097e-05
3.003e-08		 d
yr
n .2566461821608166 2.0071e-09 deg/d
Q 2.761634348146715 1.4398e-08 au
   Orbit Determination Parameters
   # obs. used (total)      571  
   data-arc span      7987 days (21.87 yr)  
   first obs. used      1999-01-14  
   last obs. used      2020-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61549  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:52:57  

Additional Information
 Earth MOID = 1.1847 au 
 Jupiter MOID = 2.51543 au 
 T_jup = 3.462 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457671.5 (2016-Oct-10.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1275542476686548 4.2149e-08  
q 2.139701561173461 1.0939e-07 au
tp 2458023.011530112164
(2017-Sep-26.51153011)		 9.6653e-05 TDB
node 144.9730566436118 2.2283e-05 deg
peri 282.9069773591677 3.1677e-05 deg
i 10.3836432137547 4.688e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      571  
   data-arc span      7987 days (21.87 yr)  
   first obs. used      1999-01-14  
   last obs. used      2020-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61549  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:52:57  

Additional Information
 Jupiter MOID = 2.51543 au 
 T_jup = 3.462 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.776553701868192E-15 -4.592328719523652E-15 -1.647631830611735E-12 -9.162625200504074E-15 -3.30965510768866E-13 1.080919817504053E-15
q -4.592328719523652E-15 1.196692612085892E-14 4.614199123023097E-12 2.352519424580062E-14 9.343463303588228E-13 -2.782462427553145E-15
tp -1.647631830611735E-12 4.614199123023097E-12 9.341815422152617E-9 1.489237071955393E-11 2.186924232629325E-9 -3.423255200821576E-12
node -9.162625200504074E-15 2.352519424580062E-14 1.489237071955393E-11 4.965354535127613E-10 -4.845761897764623E-10 1.353914195795798E-11
peri -3.30965510768866E-13 9.343463303588228E-13 2.186924232629325E-9 -4.845761897764623E-10 1.003459019021841E-9 -1.419137843734394E-11
i 1.080919817504053E-15 -2.782462427553145E-15 -3.423255200821576E-12 1.353914195795798E-11 -1.419137843734394E-11 2.197717275542517E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.89   n/a E2021B55  
diameter diameter 1.768 km 0.269 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.356   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109724 (2001 RS55)          Discovered 2001-Sep-12 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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