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213273 (2001 NB18)
Classification: Main-belt Asteroid          SPK-ID: 2213273
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .339801205965003 6.2872e-08  
a 2.62593307514566 1.5132e-08 au
q 1.733637849427776 1.66e-07 au
i 28.20672989423806 7.1364e-06 deg
node 194.0662766352178 1.6353e-05 deg
peri 106.9800081260757 2.0077e-05 deg
M 197.6811893204336 9.8519e-06 deg
tp 2459901.293811662639
(2022-Nov-17.79381166)
4.5194e-05 TDB
period 1554.260847170618
4.26
1.3434e-05
3.678e-08
d
yr
n .2316213527834438 2.002e-09 deg/d
Q 3.518228300863544 2.0273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      402  
   data-arc span      8545 days (23.39 yr)  
   first obs. used      1997-10-30  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50835  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:39:23  

Additional Information
 Earth MOID = .898385 au 
 Jupiter MOID = 2.5498 au 
 T_jup = 3.159 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457577.5 (2016-Jul-08.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3407108434624959 6.2514e-08  
q 1.729770086891942 1.6498e-07 au
tp 2458346.657637927385
(2018-Aug-16.15763793)
3.9923e-05 TDB
node 194.1049281551007 1.6353e-05 deg
peri 107.0018001582197 2.0068e-05 deg
i 28.21792917462602 7.1387e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      402  
   data-arc span      8545 days (23.39 yr)  
   first obs. used      1997-10-30  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50835  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:39:23  

Additional Information
 Jupiter MOID = 2.5498 au 
 T_jup = 3.159 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.908017143605662E-15 -1.029505371134782E-14 -8.542761737765117E-13 -8.88434544087752E-15 -3.874999978923034E-13 -8.062917621974027E-14
q -1.029505371134782E-14 2.721867589808465E-14 2.328154931606192E-12 2.428401593365882E-14 1.020608773476948E-12 2.136081044963953E-13
tp -8.542761737765117E-13 2.328154931606192E-12 1.593823352403803E-9 4.288892815856669E-11 5.101259020377526E-10 3.579388418370518E-11
node -8.88434544087752E-15 2.428401593365882E-14 4.288892815856669E-11 2.674249784641979E-10 -2.191036596867726E-10 1.544843178892181E-11
peri -3.874999978923034E-13 1.020608773476948E-12 5.101259020377526E-10 -2.191036596867726E-10 4.027391823369124E-10 -3.26106604185617E-13
i -8.062917621974027E-14 2.136081044963953E-13 3.579388418370518E-11 1.544843178892181E-11 -3.26106604185617E-13 5.09609935835939E-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 16.2   n/a MPO330390  
diameter diameter 1.733 km 0.304 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.257   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

213273 (2001 NB18)          Discovered 2001-Jul-09 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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