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C/2007 W1 (Boattini)
Classification: Hyperbolic Comet          SPK-ID: 1002487
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454613.5 (2008-May-27.0) TDB
Reference: JPL 60 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000140974438473 3.5438e-06  
a -6027.538445736041 151.53 AU
q .8497288477623686 8.3735e-07 AU
i 9.890074125196522 3.2239e-05 deg
node 334.5304598968891 0.00010038 deg
peri 306.5473402190232 0.00010871 deg
M -6.085494211369569E-5 2.2944e-06 deg
tp 2454642.393607138559
(2008-Jun-24.89360714)
0.00018106 JED
period n/a
n/a
n/a
n/a
d
yr
n 2.106173238317613E-6 7.9421e-08 deg/d
Q n/a n/a AU
  Orbit Determination Parameters
   # obs. used (total)      599  
   data-arc span      284 days  
   first obs. used      2007-11-20  
   last obs. used      2008-08-30  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   fit RMS      .95913  
   data source      ORB  
   producer      Otto Matic  
   solution date      2011-Sep-14 21:21:48  

Additional Information
 Earth MOID = .0177755 AU 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.1 mag 1. 60 2 parameter fit from 191 observations, autocmod 2.5a
comet total magnitude slope K1 7.   n/a 60 autocmod 2.5a
comet nuclear magnitude M2 16.9 mag 1. 60 from 919 observations, autocmod 2.5a
comet nuclear magnitude slope K2 5.   n/a 60 autocmod 2.5a
comet nuclear phase coefficient PC 0.03   n/a 60 autocmod 2.5a

[ 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
2006-Apr-26 18:27 00:06 Saturn 1.21353947038208 1.21350985109915 1.21356908986115 16.1647256587521 16.1517917254295 2453852.268856983 6.82706326457711 1240.4638354097 228.086825957207 -26.1648162381397 155377.716928672 T 60 CATAB v2.0c-linF95 2011-Sep-15 11:45:18 2011-Sep-15 13:08
2008-Jun-12 08:44 < 00:01 Earth 0.21004790417644 0.210046414328257 0.210049394053449 16.6858516384164 16.6850913900116 2454629.864366915 0.61350462894893 106.072270469269 27.2779211581244 22.1540552595297 427079.830986428 T 60 CATAB v2.0c-linF95 2011-Sep-15 11:45:18 2011-Sep-15 13:08
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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