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JPL Small-Body Database Browser
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523325 (2017 BT138)
Classification: Main-belt Asteroid          SPK-ID: 2523325
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07236186706465271 5.5567e-08  
a 2.987868155273304 4.9707e-08 au
q 2.771660437014708 1.4939e-07 au
i 8.910666746738229 9.6963e-06 deg
node 322.3979206639296 5.4836e-05 deg
peri 306.7261590004277 0.00010455 deg
M 138.9872637650003 9.0283e-05 deg
tp 2458272.195362139460
(2018-Jun-02.69536214)
0.00046516 TDB
period 1886.429465027132
5.16
4.7075e-05
1.289e-07
d
yr
n .190836713841735 4.7622e-09 deg/d
Q 3.2040758735319 5.3304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      6817 days (18.66 yr)  
   first obs. used      2001-02-28  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51869  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 20:11:37  

Additional Information
 Earth MOID = 1.7667 au 
 Jupiter MOID = 1.97418 au 
 T_jup = 3.235 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457471.5 (2016-Mar-24.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07454577416680312 5.5478e-08  
q 2.76370362061348 1.4901e-07 au
tp 2458275.126704795204
(2018-Jun-05.62670480)
0.00045368 TDB
node 322.545805010028 5.4706e-05 deg
peri 307.3294477346175 0.00010276 deg
i 8.922466527018901 9.715e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      6817 days (18.66 yr)  
   first obs. used      2001-02-28  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51869  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 20:11:37  

Additional Information
 Jupiter MOID = 1.97418 au 
 T_jup = 3.235 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.077859997575163E-15 -7.965565980372841E-15 4.165728230411923E-12 -2.539830415185976E-14 7.251034796075348E-13 -3.84763112365976E-15
q -7.965565980372841E-15 2.220461079437055E-14 -3.922138435818377E-12 6.118270450246838E-14 -6.896841593394022E-13 1.178210329333521E-14
tp 4.165728230411923E-12 -3.922138435818377E-12 2.058280358569665E-7 -4.049387043412745E-10 3.955152456033908E-8 -8.733030005974763E-11
node -2.539830415185976E-14 6.118270450246838E-14 -4.049387043412745E-10 2.99272260202978E-9 -3.03278081546093E-9 3.288626400153687E-10
peri 7.251034796075348E-13 -6.896841593394022E-13 3.955152456033908E-8 -3.03278081546093E-9 1.055930526624207E-8 -3.419732807729182E-10
i -3.84763112365976E-15 1.178210329333521E-14 -8.733030005974763E-11 3.288626400153687E-10 -3.419732807729182E-10 9.438097678015608E-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 16.3   n/a MPO448207  

523325 (2017 BT138)          Discovered 2006-Jan-28 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2018-05-31

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