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ASA - Associazione Scientifica Amatoiale
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Effemeridi della cometa C/1998 J1 (scoperta dal satelitte SOHO)
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Local Time U.T. RA Dec Mag E.D. S.D. E
C/1998j1
1998 May 14 6:59p May 14 19:59 04 34 39.7 +20 30 26 -4.5 0.9127 0.2893 16
1998 May 19 6:59p May 19 19:59 05 24 7.8 +11 30 59 -2.9 0.8506 0.4339 25
1998 May 24 6:59p May 24 19:59 06 04 28.6 +02 11 37 -1.7 0.8421 0.5724 34
1998 May 29 6:59p May 29 19:59 06 39 3.4 -06 15 45 -0.7 0.8705 0.7022 43
1998 Jun 3 6:59p Jun 3 19:59 07 09 25.6 -13 25 44 0.0 0.9246 0.8245 50
1998 Jun 8 6:59p Jun 8 19:59 07 36 30.5 -19 18 02 0.7 0.9961 0.9404 56
1998 Jun 13 6:59p Jun 13 19:59 08 00 56.6 -24 03 20 1.4 1.0796 1.0511 60
1998 Jun 18 6:59p Jun 18 19:59 08 23 12.8 -27 54 53 2.0 1.1712 1.1573 63
1998 Jun 23 6:59p Jun 23 19:59 08 43 42.0 -31 04 45 2.5 1.2686 1.2597 66
1998 Jun 28 6:59p Jun 28 19:59 09 02 41.8 -33 42 43 3.0 1.3700 1.3586 68
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I dati relativi all' E.D.sono errati!
la cometa dovrebbe raggiungere la magnitudine di circa 3.0 o 4.0 intorno alla fine
maggio.
Di segito si riportano due differenti effemeridi:
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Orbital elements:
Perihelion date: 1998 May 8.901
q 0.17454 AU Peri. 107.577°
Node 348.442° Incl. 55.085°
e 1.0
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Object: SOHO
Peri. Date: 1998 05 08.837
Peri. Dist: 0.16264 AU
Arg/Peri: 110.666 deg.
Asc. Node: 349.963 deg.
Inclination: 58.089 deg.
Eccen: 1.0
Orb. Period: Long Period
Ref: MPEC 1998-J14
Epoch: 1998 05 09
Absol. Mag/"n": 7.0/4.0
C/1998 J1 (SOHO)
Date R.A. Dec El Sky Mag
05-08 03h02.1m +24o57' 8o E -0.5
05-11 03h46.8m +24o17' 11o E -0.3
05-14 04h24.1m +19o46' 15o E 1.0
05-17 04h53.8m +13o42' 20o E 2.1
05-20 05h19.1m +07o41' 26o E 3.0
05-23 05h41.4m +01o39' 31o E 3.8
05-26 06h01.5m -04o00' 37o E 4.4
05-29 06h20.1m -09o09' 42o E 5.0
06-01 06h37.4m -13o47' 47o E 5.5
06-04 06h53.6m -17o53' 51o E 6.0
06-07 07h08.9m -21o30' 54o E 6.5
06-10 07h23.4m -24o41' 57o E 6.9
06-13 07h37.2m -27o30' 60o E 7.3
06-16 07h50.4m -29o59' 62o E 7.6
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