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8P/Tuttle
Classification: Jupiter-family Comet* [NEO]          SPK-ID: 1000099
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2454374.5 (2007-Oct-01.0) TDB
Reference: JPL K074/27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.8197997470243816309221 1.4498e-08  
a 5.6998620708785754374048 7.1817e-07 AU
q 1.0271165870984511059305 1.5918e-07 AU
i 54.983184844602092766763 1.5011e-05 deg
node 270.3416520050764 9.9219e-06 deg
peri 207.5092459727414 1.9885e-05 deg
M 351.4516245290291 1.9365e-06 deg
tp 2454492.525550628393
(2008-Jan-27.02555063)
1.2297e-05 JED
period 4970.441269280825
13.61
0.0009394
2.572e-06
d
yr
n .07242817699606147 1.3689e-08 deg/d
Q 10.3726075546587 1.3069e-06 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 6.894844426325457E-10 8.358E-11
A2 [EST] 1.370445739396238E-10 1.734E-13
A3 [EST] -4.593469638447816E-10 9.897E-11
  Orbit Determination Parameters
   # obs. used (total)      1555  
   data-arc span      15126 days (41.41 yr)  
   first obs. used      1967-01-07  
   last obs. used      2008-06-06  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .63669  
   data source      ORB  
   producer      Nick Mastrodemos  
   solution date      2008-Jun-25 15:10:45  

Additional Information
 Earth MOID = .0953103 AU 
 T_jup = 1.601 
[ 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 9.8 mag 1. K074/27 2 parameter fit from 139 observations, autocmod 2.4a
comet total magnitude slope K1 21.   n/a K074/27 autocmod 2.4a
comet nuclear magnitude M2 16.7 mag 0.8 K074/27 from 1232 observations, autocmod 2.4a
comet nuclear magnitude slope K2 5.   n/a K074/27 autocmod 2.4a
comet nuclear phase coefficient PC 0.03   n/a K074/27 autocmod 2.4a
diameter diameter 4.5 km 1. Harmon, J.K.;Nolan,M.C.;Howell,E.S.;Giorgini,J.D. (2008) IAUC 8909 equivalent diameter of a sphere having a volume equal to the sum of a 3km and 4km sphere

8P/Tuttle          Discovered 1790-Jan-09 by Mechain, Pierre F. A. at Paris, France
Reference: comet.disLast Updated: 2003-08-29

[ 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
1900-Dec-29 05:39 00:01 Jupiter 0.825106857170657 0.825058478055071 0.825155237337698 14.7815596176099 14.7119469374527 2415382.735904504 1.66580454218371 1045.35913506706 494.54222375971 69.0479349182424 57028.7535442983 T K074/27 CATAB v2.0b-linF95 2008-Jun-25 15:37:02 2008-Jun-25 15:37
1930-Feb-23 14:07 < 00:01 Saturn 1.87966865008731 1.87959626296307 1.87974103895603 8.83440774902472 8.8191216653369 2426031.088751255 0.896416693731842 1026.76567358048 140.300154259407 37.6873776377743 300773.929643914 T K074/27 CATAB v2.0b-linF95 2008-Jun-25 15:37:02 2008-Jun-25 15:37
1980-Dec-02 10:22 < 00:01 Earth 0.486911874428808 0.486909395269829 0.486914353587699 38.478373311528 38.4782310963049 2444575.932205176 0.0495094782777963 121.501483750753 30.7829246575569 6.50564885570393 627325.622033816 T K074/27 CATAB v2.0b-linF95 2008-Jun-25 15:37:02 2008-Jun-25 15:37
1995-Dec-28 21:42 < 00:01 Jupiter 0.785144270234247 0.785138662584763 0.785149877889144 15.9280635608147 15.8601887168012 2450080.404602677 0.0996547870739586 83.0990912638305 18.8888617822484 25.9017661691094 772914.792313734 T K074/27 CATAB v2.0b-linF95 2008-Jun-25 15:37:02 2008-Jun-25 15:37
2008-Jan-01 21:22 < 00:01 Earth 0.252827258824038 0.252826962271897 0.252827555376169 31.9056210560552 31.9052907447004 2454467.390730272 0.00645713319565554 14.3464444766752 6.31395690628581 -1.63690378262208 2492720.9618454 T K074/27 CATAB v2.0b-linF95 2008-Jun-25 15:37:02 2008-Jun-25 15:37
2048-Dec-28 10:59 < 00:01 Earth 0.175148033244741 0.175111303115836 0.175184766907138 31.9639408028986 31.9634648653113 2469438.957692905 0.86692772266832 2082.95192167759 70.9248338602101 -34.0787084365039 195625.160710465 T K074/27 CATAB v2.0b-linF95 2008-Jun-25 15:37:02 2008-Jun-25 15:37
2078-Sep-27 00:37 00:01 Jupiter 1.72668968329228 1.72666447004284 1.72671489734994 12.6043557253657 12.5653766017868 2480303.525873396 1.61249051385949 706.069467491058 200.987738605331 -83.5326461366319 264669.70608305 T K074/27 CATAB v2.0b-linF95 2008-Jun-25 15:37:02 2008-Jun-25 15:37
2107-Feb-09 12:04 00:03 Saturn 1.99833933373258 1.99829103291746 1.99838764029024 9.78016795789416 9.76718265940979 2490665.003048372 3.14188124151219 1550.63708233088 270.656227062647 70.9946494881288 278295.676976668 T K074/27 CATAB v2.0b-linF95 2008-Jun-25 15:37:02 2008-Jun-25 15:37
2130-Dec-25 20:55 00:04 Earth 0.0960562277870876 0.0959784141601668 0.096134377138165 32.616951989074 32.6161015384306 2499385.371666170 4.02392747784611 9232.75837712024 134.252307806685 -66.6167866660347 92925.2868963416 T K074/27 CATAB v2.0b-linF95 2008-Jun-25 15:37:02 2008-Jun-25 15:37
2173-Nov-10 16:13 00:09 Jupiter 0.716411169086229 0.716306860664163 0.71651548514652 15.4894155515549 15.4128961359486 2515046.175960153 9.24990920417688 2633.94573116264 1101.51438858641 68.2175678264611 23037.7714023716 T K074/27 CATAB v2.0b-linF95 2008-Jun-25 15:37:02 2008-Jun-25 15:37

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1994.5       1994 XV   1992r 
 1980.9       1980 XIII   1980h 
 1967.2       1967 V   1967a 
 1940.0       1939 X   1939k 
 1926.4       1926 IV   1926a 
 1912.8       1912 IV   1912b 
 1899.2       1899 III   1899b 
 1885.6       1885 IV   1885b 
 1872.0   8P/1871 T1   1871 III   1871d 
 1858.4   8P/1858 A1   1858 I   
 1790.3   8P/1790 A2   1790 II   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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