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78449 (2002 RU23)
Classification: Main-belt Asteroid          SPK-ID: 2078449
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .137771662834602 4.6842e-08  
a 2.680310376971854 1.3758e-08 au
q 2.311039559423603 1.2161e-07 au
i 4.829479095443387 5.0497e-06 deg
node 344.8297757137637 5.3547e-05 deg
peri 18.94327259685368 5.6697e-05 deg
M .2601116324916053 1.706e-05 deg
tp 2458999.341933943198
(2020-May-29.84193394)
7.5954e-05 TDB
period 1602.787912463008
4.39
1.234e-05
3.379e-08
d
yr
n .2246086317476572 1.7293e-09 deg/d
Q 3.049581194520105 1.5653e-08 au
  Orbit Determination Parameters
   # obs. used (total)      581  
   data-arc span      8064 days (22.08 yr)  
   first obs. used      1998-10-19  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:06:34  

Additional Information
 Earth MOID = 1.30915 au 
 Jupiter MOID = 2.4071 au 
 T_jup = 3.358 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457219.5 (2015-Jul-16.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1404314859468241 4.7067e-08  
q 2.304000448871886 1.2267e-07 au
tp 2457395.608392616035
(2016-Jan-08.10839262)
7.2564e-05 TDB
node 345.0164324468383 5.3471e-05 deg
peri 18.71034951782061 5.6458e-05 deg
i 4.834106900950144 5.0562e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      581  
   data-arc span      8064 days (22.08 yr)  
   first obs. used      1998-10-19  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:06:34  

Additional Information
 Jupiter MOID = 2.4071 au 
 T_jup = 3.358 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.215347761084869E-15 -5.750760290583596E-15 3.642688549867373E-13 -5.420243589307158E-15 7.352480602467227E-14 -2.665784860089198E-15
q -5.750760290583596E-15 1.504810295923511E-14 -9.733082782430753E-13 1.469329223132176E-14 -2.02471110973087E-13 7.214393993917855E-15
tp 3.642688549867373E-13 -9.733082782430753E-13 5.265514167647442E-9 1.455056873365979E-11 1.335096914063721E-9 -2.03496159564123E-12
node -5.420243589307158E-15 1.469329223132176E-14 1.455056873365979E-11 2.859140274581545E-9 -2.844583677747032E-9 7.42436812675188E-11
peri 7.352480602467227E-14 -2.02471110973087E-13 1.335096914063721E-9 -2.844583677747032E-9 3.187502705346086E-9 -7.446297265620277E-11
i -2.665784860089198E-15 7.214393993917855E-15 -2.03496159564123E-12 7.42436812675188E-11 -7.446297265620277E-11 2.556491146077817E-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 15.6   n/a MPO436330  

78449 (2002 RU23)          Discovered 2002-Sep-04 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 RU23 = 2000 EP142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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