- 2012-06-02 : Fireball in the French sky
- 2011-12-29 : natural Earth satellites
- 2011-12-21 : 2011 Draconids: the movie!
- 2011-11-30 : A new comet seen in the eye of a small telescope automatically
- 2011-10-27 : Faraway Eris is Pluto's Twin
- 2011-10-26 : A meteor captured by the new IMCCE camera
- 2011-10-11 : The Secrets of Asteroid Minerva and its Two Moons
- 2011-10-07 : 2011 Draconids
- 2011-08-31 : preparation for the coming Draconids meteor outburst
- 2011-06-26 : 2011 MD will pass extremely close by Earth on Monday June 27
- 2011-04-22 : The famous Cretaceous-Paleogene boundary older than we thought
- 2011-04-21 : Flighing over Pic du midi observatory
- 2011-04-14 : Creation of the African Astronomical Society
- 2011-03-17 : Giant Full Moon on March 19th
- 2010-12-30 : The 2010 Geminids observation campaign
- 2010-12-16 : Paris under snow, Venus under clouds
- 2010-12-11 : 2010 Geminids
- 2010-11-28 : Snowstorm on Hartley 2
- 2010-11-04 : NASA Mission Successfully Flies by Comet Hartley 2
- 2010-08-19 : 2010 Perseids
- 2010-07-11 : Lutetia as though you were there
- 2010-07-10 : Lutetia takes the Stage
- 2010-06-30 : A giant water ice shell under the surface of the asteroid (90) Antiope ?
- 2010-06-11 : The comet McNaught C/2009 R1
- 2010-06-04 : New impact detected on Jupiter
- 2010-05-26 : South African Astronomical Observatory Selected as Host for the IAU Office for Astronomy Development
- 2010-05-21 : The mystery of the disapperance of the south band of Jupiter
- 2010-03-26 : An avalanche of asteroids
- 2010-01-20 : Zoom on Near-Earth Asteroids
- 2010-01-18 : Asteroid 2867 Steins seen by Rosetta
- 2009-08-21 : Le calendrier musulman et le calcul des dates du mois de Ramadan
- 2009-06-17 : Solstice d'été
- 2009-05-27 : La direction de La Mecque grâce au Soleil
- 2009-04-22 : The solar wind is the cause of rapid ageing of the asteroids
- 2009-04-06 : To photograph the sunset on the Grand Canal in Versailles
- 2009-03-09 : Paris Astronomers "Catch" Passing Asteroid
- 2009-03-09 : Summer time
- 2009-03-09 : Spring equinox
- 2009-02-09 : Comète LULIN
- 2009-02-02 : Lever du Soleil dans l'axe de l'arche de l'Arc de Triomphe
- 2008-07-31 : Webcast from Novosibirsk of the total eclipse of the Sun on August 1, 2008
- 2008-07-17 : Calculation of the visibility of the first crescent of the Moon in August-September 2008
- 2008-07-17 : The sun under the Arc de Triomphe
- 2008-07-17 : To photograph the sunset on the Grand Canal in Versailles
- 2008-07-17 : Partial eclipse of the Moon on 2008, August 16th
- 2008-07-02 : Earth in aphelion on July 4th
- 2008-06-10 : Summer solstice on June 20th
- 2008-06-02 : Update of the lectures on relativity in celestial mechanics and astrometry.
- 2008-06-02 : Publication of the IMCCE scientific and technical Note S093
- 2008-05-05 : The sun under the Arc de Triomphe
- 2008-02-25 : To photograph the sunset on the Grand Canal in Versailles
- 2008-02-25 : Spring equinox
- 2008-02-25 : Summer time
- 2007-12-06 : 2008 Nautical Ephemerids
- 2007-12-06 : Publication of Guide de Données Astronomiques 2008 - Annuaire du Bureau des Longitudes
- 2007-12-06 : Agenda astronomique 2008
- 2007-12-04 : The Quadrantids
- 2007-12-04 : Earth at perihelion
- 2007-12-04 : Winter solstice
- 2007-10-02 : Clock change back to winter
- 2007-09-21 : Autumnal equinox
- 2007-07-25 : The sixtieth satellite of Saturn
- 2007-07-03 : Earth in aphelion on July 6th
- 2007-05-24 : Summer solstice on June 21th
- 2007-03-20 : To photograph the sunset on the Grand Canal in Versailles
- 2007-03-09 : A new triple asteroid discovered in the Main Belt
- 2007-02-26 : Lyrides as beginnings of meteor shower
- 2007-02-26 : Summer time
- 2007-02-26 : Spring equinox
- 2007-01-22 : New version of the ephemerides «Connaissance des Temps »
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Note number : 0134
P/Kowal-Mrkos : 143P
- Introduction
- Elements
- Formulæ for magnitudes
- Elements for the next transit through perihelion
- Elements for the previous transit(s) through perihelion
- Comparison with observations
- Ephemerides of the comet (ou click to open TEXT file TEXTE)
- Load the Postscript file of the note
Introduction
The following improved orbital elements, are from 389 observations 1984 April 23 to 2012 September 18. Perturbations by all nine planets were taken into account, and relativity effect of the sun. The mean residual is 0.36 arc second.
Elements
Orbital elements given with respect to the mean ecliptic and equinox of J2000.Epoch : 2009 June 12 at 0h TT, julian day 2454994.5.
| Perihelion passage (T) | 2009 June 12.19775 TT | ±0.00000 TT |
| Argument of perihelion (ω) | 320.7602012° | ±0.0000640° |
| >Longitude of the node (Ω) | 245.3685792° | ۪.0000640° |
| Inclinaison (i) | 4.6898986° | ±0.0000053° |
| Perihelion distance (q) | 2.5382006 ua | ±0.0000002 ua |
| Eccentricity (e) | 0.4098120 | ±0.0000003 |
| Semimajor axis (a) | 4.3006649 ua | ±0.0000025 ua |
| Mean motion (n) | 0.11050977°/jour | ±0.00000010°/jour |
| Period (P) | 8.919 years | ±0.0000079 (0.0029 day) |
Formulæ for magnitudes
Total magnitude :m1 = H1 + 5log(Δ) + 10 log(r) avec H1 = 11.60± 0.06 calculé à l'aide de 161 observation(s).
Nuclear magnitude :
m2 = H2 + 5log(Δ) + 5 log(r) avec H2 = 14.07±0.02 calculé à l'aide de 115 observation(s).
Elements for the next transit through perihelion
Epoch :2018 May 7 at 0h TT, julian day 2458245.5 TT.
| T =2018 May 7.30024 TT. | |||
| q :2.5322569 ua | (J2000) | P | Q |
| n : 0.11064977°/jour | ω : 320.8674591° | -0.89556058 | +0.43867863 |
| a : 4.2970365 ua | Ω : 245.3030713° | -0.38490994 | -0.84768895 |
| e : 0.4106969 | i : 4.6959385° | -0.22319405 | -0.29830270 |
| P =8.91 years | |||
Elements for the previous transit(s) through perihelion
Epoch :2000 July 1 at 0h TT, julian day 2451726.5 TT.
| T =2000 July 1.78768 TT. | |||
| q :2.5467384 ua | (J2000) | P | Q |
| n : 0.11016923°/jour | ω : 320.5883296° | -0.89620027 | +0.43738339 |
| a : 4.3095226 ua | Ω : 245.4983946° | -0.38363050 | -0.84813071 |
| e : 0.4090440 | i : 4.6837270° | -0.22282888 | -0.29894827 |
| P =8.95 years | |||
Epoch :1991 June 2 at 0h TT, julian day 2448409.5 TT.
| T =1991 August 2.26938 TT. | |||
| q :2.5320722 ua | (J2000) | P | Q |
| n : 0.11085832°/jour | ω : 320.4471762° | -0.89622991 | +0.43730094 |
| a : 4.2916455 ua | Ω : 245.6343374° | -0.38347980 | -0.84813838 |
| e : 0.4099997 | i : 4.6867292° | -0.22296902 | -0.29904712 |
| P =8.89 years | |||
Epoch :1984 June 8 at 0h TT, julian day 2445859.5 TT.
| T =1984 June 8.31843 TT. | |||
| q :1.9489303 ua | (J2000) | P | Q |
| n : 0.13416066°/jour | ω : 338.3182126° | -0.67334011 | +0.73775927 |
| a : 3.7790787 ua | Ω : 249.3208053° | -0.67052666 | -0.63684667 |
| e : 0.4842843 | i : 2.9538534° | -0.31145963 | -0.22391422 |
| P =7.35 years | |||
Contact
Send your suggestion to the author of the notes : Patrick Rocher
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