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74652 (1999 RE85)
Classification: Main-belt Asteroid          SPK-ID: 2074652
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1814671306735509 5.3519e-08  
a 2.388917437047839 1.407e-08 au
q 1.955407444330755 1.2456e-07 au
i 1.193053792940098 5.638e-06 deg
node 178.066999454167 0.00021158 deg
peri 178.4744722880005 0.00021201 deg
M 216.8026116408692 1.5796e-05 deg
tp 2459536.954304132405
(2021-Nov-18.45430413)		 6.2393e-05 TDB
period 1348.65273522533
3.69		 1.1915e-05
3.262e-08		 d
yr
n .2669330588944024 2.3583e-09 deg/d
Q 2.822427429764923 1.6623e-08 au
   Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      7560 days (20.70 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56728  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:52  

Additional Information
 Earth MOID = .951094 au 
 Jupiter MOID = 2.62128 au 
 T_jup = 3.510 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456394.5 (2013-Apr-12.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1809647692966537 5.3436e-08  
q 1.957237947740297 1.2439e-07 au
tp 2456836.095989379894
(2014-Jun-27.59598938)		 4.8909e-05 TDB
node 178.1181380694738 0.00021238 deg
peri 177.9106160939227 0.0002128 deg
i 1.18882426589381 5.6338e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      7560 days (20.70 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56728  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:52  

Additional Information
 Jupiter MOID = 2.62128 au 
 T_jup = 3.510 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.85540222083683E-15 -6.62134676262112E-15 5.551739371440615E-13 1.128863886099913E-14 4.783852116851925E-14 -9.495438872878835E-16
q -6.62134676262112E-15 1.547384715122232E-14 -1.088465307209391E-12 -2.572287531429325E-14 -7.093721990183663E-14 2.218755541860025E-15
tp 5.551739371440615E-13 -1.088465307209391E-12 2.392076218279887E-9 9.272481166809444E-12 6.581601263156006E-10 -8.588471568817552E-13
node 1.128863886099913E-14 -2.572287531429325E-14 9.272481166809444E-12 4.510588034436853E-8 -4.509343318936566E-8 1.962123145965686E-10
peri 4.783852116851925E-14 -7.093721990183663E-14 6.581601263156006E-10 -4.509343318936566E-8 4.528549810057577E-8 -1.964113871823847E-10
i -9.495438872878835E-16 2.218755541860025E-15 -8.588471568817552E-13 1.962123145965686E-10 -1.964113871823847E-10 3.173931993362871E-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 16.66   n/a E2021B10  

74652 (1999 RE85)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RE85 = 2002 KT2 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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