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442495 (2011 VN18)
Classification: Main-belt Asteroid          SPK-ID: 2442495
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2588327226871115 8.155e-08  
a 2.726061286365618 4.3286e-08 au
q 2.020467421403676 2.4521e-07 au
i 12.37868426791306 1.1672e-05 deg
node 75.88875224119917 3.5141e-05 deg
peri 253.528125931525 4.446e-05 deg
M 12.86367196381001 2.8291e-05 deg
tp 2458941.755893085943
(2020-Apr-02.25589309)
0.00012821 TDB
period 1644.000138417465
4.50
3.9157e-05
1.072e-07
d
yr
n .2189780837528034 5.2157e-09 deg/d
Q 3.431655151327561 5.449e-08 au
  Orbit Determination Parameters
   # obs. used (total)      108  
   data-arc span      6059 days (16.59 yr)  
   first obs. used      2002-11-06  
   last obs. used      2019-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58005  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:41:10  

Additional Information
 Earth MOID = 1.04994 au 
 Jupiter MOID = 2.0632 au 
 T_jup = 3.275 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457552.5 (2016-Jun-13.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2596605079475623 8.1397e-08  
q 2.017966044862898 2.4467e-07 au
tp 2457299.627085892065
(2015-Oct-04.12708589)
0.00010531 TDB
node 75.89662921253499 3.5148e-05 deg
peri 253.8607881425918 4.4476e-05 deg
i 12.37948777431947 1.1676e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      108  
   data-arc span      6059 days (16.59 yr)  
   first obs. used      2002-11-06  
   last obs. used      2019-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58005  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:41:10  

Additional Information
 Jupiter MOID = 2.0632 au 
 T_jup = 3.275 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.625548191553668E-15 -1.982588072675114E-14 -1.120225871868291E-12 1.28535998732225E-13 -1.05606517426234E-13 -7.25924932417388E-14
q -1.982588072675114E-14 5.986490664747384E-14 4.608916308294012E-12 -3.892176036996879E-13 6.452262412384003E-13 2.25986185229881E-13
tp -1.120225871868291E-12 4.608916308294012E-12 1.108930674918555E-8 -1.103053250462918E-10 2.91662407431281E-9 6.972345361082471E-11
node 1.28535998732225E-13 -3.892176036996879E-13 -1.103053250462918E-10 1.235413357482211E-9 -1.228475663069445E-9 -1.947233309007216E-10
peri -1.05606517426234E-13 6.452262412384003E-13 2.91662407431281E-9 -1.228475663069445E-9 1.978098348396881E-9 2.046571174150519E-10
i -7.25924932417388E-14 2.25986185229881E-13 6.972345361082471E-11 -1.947233309007216E-10 2.046571174150519E-10 1.363306855798578E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO477089  

442495 (2011 VN18)          Discovered 2006-Jul-26 by Siding Spring Survey at Siding Spring
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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