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JPL Small-Body Database Browser
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212957 (2009 BY57)
Classification: Main-belt Asteroid          SPK-ID: 2212957
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .229495895932636 5.3461e-08  
a 2.366240996703175 1.9627e-08 au
q 1.823198399172246 1.2556e-07 au
i 5.63742081707823 8.4519e-06 deg
node 317.5830043219221 6.0439e-05 deg
peri 256.0591629612364 6.4566e-05 deg
M 244.6088917071989 2.9607e-05 deg
tp 2459026.644347805570
(2020-Jun-26.14434781)
0.00011304 TDB
period 1329.495551951259
3.64
1.6541e-05
4.529e-08
d
yr
n .27077939408796 3.3689e-09 deg/d
Q 2.909283594234104 2.4131e-08 au
  Orbit Determination Parameters
   # obs. used (total)      204  
   data-arc span      7595 days (20.79 yr)  
   first obs. used      1998-01-31  
   last obs. used      2018-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60839  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:45:31  

Additional Information
 Earth MOID = .827505 au 
 Jupiter MOID = 2.10354 au 
 T_jup = 3.505 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456701.5 (2014-Feb-13.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2295638449403984 5.3368e-08  
q 1.822831973332683 1.2533e-07 au
tp 2456368.419449128246
(2013-Mar-16.91944913)
9.276e-05 TDB
node 317.6189177040796 6.0397e-05 deg
peri 256.0815372907583 6.4539e-05 deg
i 5.63994196767081 8.4546e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      204  
   data-arc span      7595 days (20.79 yr)  
   first obs. used      1998-01-31  
   last obs. used      2018-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60839  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:45:31  

Additional Information
 Jupiter MOID = 2.10354 au 
 T_jup = 3.505 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.848147288126602E-15 -6.64086381836306E-15 -6.849701668563876E-13 -5.313148532697028E-15 -1.513931226192218E-13 2.876544239189606E-15
q -6.64086381836306E-15 1.570744342981754E-14 2.325826264950049E-12 1.766120730907836E-14 5.358962037764391E-13 -4.477249663522857E-15
tp -6.849701668563876E-13 2.325826264950049E-12 8.604343407955197E-9 6.382176310508576E-11 2.135421491504597E-9 4.306087811716621E-12
node -5.313148532697028E-15 1.766120730907836E-14 6.382176310508576E-11 3.647779698888916E-9 -3.613457091234341E-9 -4.25089927811572E-12
peri -1.513931226192218E-13 5.358962037764391E-13 2.135421491504597E-9 -3.613457091234341E-9 4.165331113585958E-9 5.697878312500155E-12
i 2.876544239189606E-15 -4.477249663522857E-15 4.306087811716621E-12 -4.25089927811572E-12 5.697878312500155E-12 7.148037334206366E-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 16.8   n/a MPO418140  

212957 (2009 BY57)          Discovered 2009-Jan-20 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

Alternate Designations
 2009 BY57 = 2004 XV170 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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