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109P/Swift-Tuttle
Classification: Halley-type Comet* [NEO]          SPK-ID: 1000140
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2450000.5 (1995-Oct-10.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.963225755046038 6.8344e-09  
a 26.0920694978266 8.2048e-07 AU
q 0.959516155068868 1.7657e-07 AU
i 113.453816997171 2.1907e-05 deg
node 139.3811920815948 2.7841e-05 deg
peri 152.9821676305871 3.2865e-05 deg
M 7.631696167124212 3.1321e-07 deg
tp 2448968.499784556297
(1992-Dec-11.99978456)
2.9166e-05 JED
period 48681.19346262312
133.28
0.0022962
6.287e-06
d
yr
n .007395052881692476 3.4881e-10 deg/d
Q 51.22462284058444 1.6108e-06 AU
  Orbit Determination Parameters
   # obs. used (total)      652  
   data-arc span      94131 days (257.72 yr)  
   first obs. used      1737-07-08  
   last obs. used      1995-03-29  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      1.1984  
   data source      ORB  
   producer      M.S.W. Keesey  
   solution date      2001-Oct-09 15:34:49  

Additional Information
 Earth MOID = .000892135 AU 
 T_jup = -0.280 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 4.5 mag n/a ICQ 1994 Handbook  
comet total magnitude slope K1 15.0   n/a ICQ 1994 Handbook  
comet nuclear magnitude M2 8.5 mag n/a ICQ 1994 Handbook  
comet nuclear magnitude slope K2 10.0   n/a ICQ 1994 Handbook  
diameter diameter 26 km n/a Lamy,P.L.;Toth,I.;Fernandez,Y.R.;Weaver,H.A. (2004) Comets II, pp. 223-264  

109P/Swift-Tuttle          Discovered 1862-Jul-16 by Swift, Lewis at Marathon, New York
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1992.9   109P/1992 S2   1992 XXVIII   1992t 
 1859.7   109P/1862 O1   1862 III   
 1726.4   109P/1737 N1   1737 II   
 127.0   109P/ 188 O1    188    
 -6.3   109P/ -68 Q1    -68    
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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