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C/2015 F5 (SWAN-Xingming)
Classification: Halley-type Comet* [NEO]          SPK-ID: 1003382
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457133.5 (2015-Apr-21.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9776355273044856 5.0365e-05  
a 15.47075653971312 0.035058 au
q .3459953122113656 4.9792e-06 au
i 149.2590285451703 0.00093922 deg
node 287.7365667846381 0.0011599 deg
peri 13.3839479627594 0.0040396 deg
M .387145510352612 0.0013286 deg
tp 2457109.597821741786
(2015-Mar-28.09782174)
0.00078141 TDB
period 22226.22745933385
60.85
75.551
0.2068
d
yr
n .01619708070830612 5.5056e-05 deg/d
Q 30.59551776721487 0.069333 au
  Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      45 days  
   first obs. used      2015-04-05  
   last obs. used      2015-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      6  
   norm. resid. RMS      1.0856  
   source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-11 15:44:56  

Additional Information
 Earth MOID = .441563 au 
 T_jup = -0.287 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 2.536664879766959E-9 2.453949873759695E-10 3.934665645826084E-8 5.655166779896486E-8 2.031829028888969E-7 -4.71198918847468E-8
q 2.453949873759695E-10 2.479291409762799E-11 3.796658144108696E-9 5.284066930468106E-9 1.964038166989465E-8 -4.501826789418642E-9
tp 3.934665645826084E-8 3.796658144108696E-9 6.106040441269194E-7 8.802091488703616E-7 3.153298429094127E-6 -7.318555517200776E-7
node 5.655166779896486E-8 5.284066930468106E-9 8.802091488703616E-7 1.345430784004505E-6 4.579085087575907E-6 -1.07129581085072E-6
peri 2.031829028888969E-7 1.964038166989465E-8 3.153298429094127E-6 4.579085087575907E-6 1.63187705032734E-5 -3.785773139424413E-6
i -4.71198918847468E-8 -4.501826789418642E-9 -7.318555517200776E-7 -1.07129581085072E-6 -3.785773139424413E-6 8.82125674005896E-7

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 17.6   1. 9 from 91 observations, assumed slope, autocmod 2.6
comet total magnitude slope K1 16.   n/a 9 autocmod 2.6

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2015-Mar-23 01:06 < 00:01 Mercury 0.0593972568968092 0.0593599947010171 0.0594345222296124 105.518287061476 105.518263563519 2457104.545964042 0.211813878104934 1979.2113144329 88.9690711197663 20.1610430268397 34650.4282288577 T 9 CATAB v2.0e-lin.ifort 2017-Nov-30 19:10:58 2017-Nov-30 19:10

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2015.2   C/2015 F5       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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