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305230 (2007 XP18)
Classification: Main-belt Asteroid          SPK-ID: 2305230
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07551281721811477 4.3611e-08  
a 2.576969811469862 2.0519e-08 au
q 2.382375561119738 1.1226e-07 au
i 5.36717781319944 4.9598e-06 deg
node 71.43120592174337 5.2088e-05 deg
peri 166.8923507098899 6.2378e-05 deg
M 211.2825582116095 3.6888e-05 deg
tp 2459624.697217939020
(2022-Feb-14.19721794)
0.0001568 TDB
period 1510.992898719894
4.14
1.8047e-05
4.941e-08
d
yr
n .2382539324340903 2.8456e-09 deg/d
Q 2.771564061819985 2.2068e-08 au
  Orbit Determination Parameters
   # obs. used (total)      296  
   data-arc span      7725 days (21.15 yr)  
   first obs. used      1998-09-25  
   last obs. used      2019-11-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51568  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 18:48:32  

Additional Information
 Earth MOID = 1.37031 au 
 Jupiter MOID = 2.22161 au 
 T_jup = 3.416 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457028.5 (2015-Jan-06.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07601739804135614 4.3537e-08  
q 2.380879794700399 1.1214e-07 au
tp 2456606.295344157730
(2013-Nov-09.79534416)
0.00014971 TDB
node 71.46079393015835 5.2136e-05 deg
peri 167.5948773837535 6.232e-05 deg
i 5.3655736452048 4.9571e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      296  
   data-arc span      7725 days (21.15 yr)  
   first obs. used      1998-09-25  
   last obs. used      2019-11-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51568  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 18:48:32  

Additional Information
 Jupiter MOID = 2.22161 au 
 T_jup = 3.416 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.895436553584088E-15 -4.812267342312435E-15 1.06918972422439E-12 1.754897366955821E-14 2.048765067490715E-13 -1.175717442829017E-15
q -4.812267342312435E-15 1.257509622248043E-14 -2.610871327269733E-12 -4.357297826906846E-14 -4.762338614675437E-13 3.448305118386708E-15
tp 1.06918972422439E-12 -2.610871327269733E-12 2.241270030236709E-8 7.945943514286467E-11 5.134424229948953E-9 -1.868837302983385E-12
node 1.754897366955821E-14 -4.357297826906846E-14 7.945943514286467E-11 2.718182587400781E-9 -2.68757534715029E-9 2.260759695063931E-11
peri 2.048765067490715E-13 -4.762338614675437E-13 5.134424229948953E-9 -2.68757534715029E-9 3.883810686772363E-9 -2.287461133466717E-11
i -1.175717442829017E-15 3.448305118386708E-15 -1.868837302983385E-12 2.260759695063931E-11 -2.287461133466717E-11 2.457270244306869E-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 16.4   n/a MPO455249  

305230 (2007 XP18)          Discovered 2007-Dec-12 by OAM at Costitx
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

Alternate Designations
 2007 XP18 = 2005 GF173 = 2006 QZ122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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