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487629 (2015 NW18)
Classification: Main-belt Asteroid          SPK-ID: 2487629
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1339538228057892 9.0682e-08  
a 2.362969996303875 2.7293e-08 au
q 2.046441132123589 2.049e-07 au
i 7.707423437361314 7.2977e-06 deg
node 106.5932489121291 5.4405e-05 deg
peri 228.2661563159475 6.2642e-05 deg
M 110.5412160004623 2.5396e-05 deg
tp 2458593.112710705878
(2019-Apr-19.61271071)
9.3398e-05 TDB
period 1326.739739729934
3.63
2.2987e-05
6.293e-08
d
yr
n .2713418383572954 4.7012e-09 deg/d
Q 2.679498860484161 3.0949e-08 au
  Orbit Determination Parameters
   # obs. used (total)      93  
   data-arc span      5066 days (13.87 yr)  
   first obs. used      2005-12-25  
   last obs. used      2019-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60359  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 03:44:30  

Additional Information
 Earth MOID = 1.04481 au 
 Jupiter MOID = 2.65771 au 
 T_jup = 3.526 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457415.5 (2016-Jan-28.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1350417963812315 9.0766e-08  
q 2.043419107013583 2.0533e-07 au
tp 2457266.437239781325
(2015-Aug-31.93723978)
9.4838e-05 TDB
node 106.6533423197095 5.4458e-05 deg
peri 228.1554528022029 6.2492e-05 deg
i 7.70498594221367 7.2965e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      93  
   data-arc span      5066 days (13.87 yr)  
   first obs. used      2005-12-25  
   last obs. used      2019-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60359  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 03:44:30  

Additional Information
 Jupiter MOID = 2.65771 au 
 T_jup = 3.526 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.238420958689401E-15 -1.853747267600439E-14 -2.363047792707565E-12 7.170480878792434E-14 -1.010128950616443E-12 -1.59601097989053E-14
q -1.853747267600439E-14 4.215912756046161E-14 5.039311863130987E-12 -1.677155859150916E-13 2.213904742914205E-12 3.563762191086843E-14
tp -2.363047792707565E-12 5.039311863130987E-12 8.994213034654754E-9 -8.467487021267396E-11 2.938995758640127E-9 -1.053201888838533E-11
node 7.170480878792434E-14 -1.677155859150916E-13 -8.467487021267396E-11 2.965708208322106E-9 -2.967325353741743E-9 1.354776378284277E-10
peri -1.010128950616443E-12 2.213904742914205E-12 2.938995758640127E-9 -2.967325353741743E-9 3.905302407331326E-9 -1.368927495888215E-10
i -1.59601097989053E-14 3.563762191086843E-14 -1.053201888838533E-11 1.354776378284277E-10 -1.368927495888215E-10 5.323905043974685E-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 17.6   n/a MPO349343  

487629 (2015 NW18)          Discovered 2005-Dec-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2017-03-14

Alternate Designations
 2015 NW18 = 2005 YC87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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