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JPL Small-Body Database Browser
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461331 (2015 XX278)
Classification: Main-belt Asteroid          SPK-ID: 2461331
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08301364448078735 1.0882e-07  
a 3.117963600748344 8.3505e-08 au
q 2.859130078891785 3.7173e-07 au
i 12.98011898575773 9.2741e-06 deg
node 74.94153600894957 3.4306e-05 deg
peri 234.3622661354731 6.5826e-05 deg
M 38.70257403731961 5.5771e-05 deg
tp 2458784.306646796565
(2019-Oct-27.80664680)
0.00030886 TDB
period 2010.967205390214
5.51
8.0786e-05
2.212e-07
d
yr
n .1790183345780343 7.1917e-09 deg/d
Q 3.376797122604903 9.0437e-08 au
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      5277 days (14.45 yr)  
   first obs. used      2004-12-18  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57012  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:01:06  

Additional Information
 Earth MOID = 1.8661 au 
 Jupiter MOID = 1.82471 au 
 T_jup = 3.172 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457236.5 (2015-Aug-02.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0860209078192555 1.0622e-07  
q 2.849885333414111 3.6457e-07 au
tp 2456780.360881369833
(2014-May-02.86088137)
0.00028907 TDB
node 74.99444884508557 3.4353e-05 deg
peri 235.8434791051784 6.5125e-05 deg
i 12.97395326620812 9.2676e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      5277 days (14.45 yr)  
   first obs. used      2004-12-18  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57012  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:01:06  

Additional Information
 Jupiter MOID = 1.82471 au 
 T_jup = 3.172 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.128162725180666E-14 -3.796242466597801E-14 -9.378178869949011E-12 2.708021756500228E-15 -2.453279197248504E-12 -3.903298410500967E-14
q -3.796242466597801E-14 1.329131135348733E-13 3.014169997093137E-11 -1.422256948755936E-14 8.217664365354811E-12 1.442243116657576E-13
tp -9.378178869949011E-12 3.014169997093137E-11 8.356043255087418E-8 1.862182211821082E-11 1.592107691019167E-8 -8.999095327686267E-12
node 2.708021756500228E-15 -1.422256948755936E-14 1.862182211821082E-11 1.180149340061236E-9 -1.146198392645612E-9 -3.255967781706443E-13
peri -2.453279197248504E-12 8.217664365354811E-12 1.592107691019167E-8 -1.146198392645612E-9 4.241295335760796E-9 1.486747520528504E-12
i -3.903298410500967E-14 1.442243116657576E-13 -8.999095327686267E-12 -3.255967781706443E-13 1.486747520528504E-12 8.58892771185883E-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 16.1   n/a MPO446804  

461331 (2015 XX278)          Discovered 2004-Dec-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2016-02-25

[ show close-approach data ]
Alternate Designations
 2015 XX278 = 2004 YH9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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