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215957 (2005 NT55)
Classification: Main-belt Asteroid          SPK-ID: 2215957
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2470738984021313 4.3166e-08  
a 2.698097544821337 1.584e-08 au
q 2.03146806615311 1.1901e-07 au
i 12.18979021917586 5.4975e-06 deg
node 224.1227571833129 2.1074e-05 deg
peri 62.98908908130043 2.4316e-05 deg
M 143.3530762862711 1.1148e-05 deg
tp 2458355.901317746479
(2018-Aug-25.40131775)
4.7739e-05 TDB
period 1618.769067416878
4.43
1.4255e-05
3.903e-08
d
yr
n .2223912028257765 1.9584e-09 deg/d
Q 3.364727023489564 1.9753e-08 au
  Orbit Determination Parameters
   # obs. used (total)      352  
   data-arc span      6686 days (18.31 yr)  
   first obs. used      2001-10-07  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5176  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:29:15  

Additional Information
 Earth MOID = 1.04881 au 
 Jupiter MOID = 1.90512 au 
 T_jup = 3.293 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457312.5 (2015-Oct-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2479426597403752 4.2854e-08  
q 2.027735072623695 1.1808e-07 au
tp 2456739.276447761871
(2014-Mar-22.77644776)
4.4463e-05 TDB
node 224.1437186500686 2.1084e-05 deg
peri 63.11909111640129 2.4331e-05 deg
i 12.18948221315786 5.498e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      352  
   data-arc span      6686 days (18.31 yr)  
   first obs. used      2001-10-07  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5176  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:29:15  

Additional Information
 Jupiter MOID = 1.90512 au 
 T_jup = 3.293 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.83649320048038E-15 -5.035082920952811E-15 -4.123640170720062E-13 1.625873167404035E-14 -1.9532849855593E-13 -7.786000815084388E-15
q -5.035082920952811E-15 1.394196980580186E-14 1.145507600156194E-12 -4.689497484126967E-14 5.533554774215257E-13 2.29532898440084E-14
tp -4.123640170720062E-13 1.145507600156194E-12 1.97698791006681E-9 -2.424202654432304E-11 5.471946584200983E-10 1.507326357796283E-12
node 1.625873167404035E-14 -4.689497484126967E-14 -2.424202654432304E-11 4.445470602475274E-10 -4.407487240298962E-10 -2.399611254524399E-12
peri -1.9532849855593E-13 5.533554774215257E-13 5.471946584200983E-10 -4.407487240298962E-10 5.919803955893111E-10 3.068955894018377E-12
i -7.786000815084388E-15 2.29532898440084E-14 1.507326357796283E-12 -2.399611254524399E-12 3.068955894018377E-12 3.022839615678213E-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 16.0   n/a MPO433413  

215957 (2005 NT55)          Discovered 2005-Jul-11 by Lowe, A. at Mayhill
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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