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JPL Small-Body Database Browser
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C/2019 Q4 (Borisov)
Classification: Hyperbolic Comet          SPK-ID: 1003639
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459061.5 (2020-Jul-31.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 3.356191268153205 1.5202e-05  
a -.8516388443116791 5.5857e-06 au
q 2.006624008587265 1.6932e-06 au
i 44.05262620283894 1.0819e-05 deg
node 308.1489154698829 3.3161e-05 deg
peri 209.1246056235187 4.8365e-05 deg
M 295.276576763394 0.0028995 deg
tp 2458826.044892125870
(2019-Dec-08.54489213)
5.1001e-05 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.254067407708324 1.2338e-05 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.312064128545632E-8 4.214E-9
A2 [EST] -3.252092709814249E-8 1.055E-8
  Orbit Determination Parameters
   # obs. used (total)      1310  
   data-arc span      444 days (1.22 yr)  
   first obs. used      2018-12-13  
   last obs. used      2020-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .52256  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Mar-19 08:23:45  

Additional Information
 Earth MOID = 1.09371 au 
 Jupiter MOID = 2.38868 au 
[ hide covariance matrix ]
Orbit Covariance (8×8)
  e q tp node peri i A1 A2
e 2.31087735345671E-10 -1.607068568443598E-12 9.102104660817191E-11 -1.235397002414574E-10 -3.733225863734944E-10 8.738915077492447E-11 2.142545836012259E-14 1.212647081665262E-13
q -1.607068568443598E-12 2.86689798490559E-12 1.329322101186951E-11 4.593858932089956E-11 5.561694538129226E-11 1.052446121312088E-11 -3.950123832831348E-15 -1.03749855813829E-14
tp 9.102104660817191E-11 1.329322101186951E-11 2.601130225381313E-9 -5.64127996562025E-10 1.430397469596281E-9 -1.586050580266412E-10 -1.516142094166327E-13 1.895244027396029E-13
node -1.235397002414574E-10 4.593858932089956E-11 -5.64127996562025E-10 1.099649543294455E-9 5.799560715441635E-10 2.253403083978698E-10 -1.830178968620135E-14 -2.793641755794536E-13
peri -3.733225863734944E-10 5.561694538129226E-11 1.430397469596281E-9 5.799560715441635E-10 2.339193460422798E-9 -7.964457246370366E-11 -1.873062577318044E-13 -2.691989879736344E-13
i 8.738915077492447E-11 1.052446121312088E-11 -1.586050580266412E-10 2.253403083978698E-10 -7.964457246370366E-11 1.170445643388654E-10 9.715926591577947E-15 -1.186847961387926E-14
A1 2.142545836012259E-14 -3.950123832831348E-15 -1.516142094166327E-13 -1.830178968620135E-14 -1.873062577318044E-13 9.715926591577947E-15 1.776114233300794E-17 1.148082046579149E-17
A2 1.212647081665262E-13 -1.03749855813829E-14 1.895244027396029E-13 -2.793641755794536E-13 -2.691989879736344E-13 -1.186847961387926E-14 1.148082046579149E-17 1.113634354548976E-16

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.7   0.8 52 2 parameter fit from 2016 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 52 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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