Update for (441) Bathilde - January 10/11, 2003

  • Preliminary update computed by Jan Manek;   issued 26 Dec 2002 14:15:00 +0100 (CET)

  • Jan Manek's update

                        IOTA/IOTA-ES occultation update for
        (441) Bathilde / TYC 0231-00635-1 = SAO 117679 on January 10/11, 2003
          visible from S Russia, Crimean peninsula, Romania, fr,.Yugoslavia,
              mid-north Italy, S France, N Spain, S USA and NW Mexico
    
    Summary 

    In the night of January 10/11, 2002 a bright 7.7 mag star TYC 0231-00063-1 = SAO 117679 will be occulted by a 73 km asteroid (441) Bathilde. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and Tycho-2 star position.

    The updated path shows ~6 path width south shift with time 1.9 minutes later compared to Edwin Goffin's nominal prediction.

    Updated path runs over S Russia ~3:37.8 UT with Stavropol and Krasnodar in path, Crimean peninsula ~3:38.4 UT, Romania ~3:39 UT with Bucharest in path, frm.Yugoslavia ~3:40 UT with Belgrade in path, mid-north Italy ~3:40.8 UT, S France ~3:41.8 UT with Nice and Marseilles in path while Toulouse and Pic du Midi are on limits. Follows N Spain ~3:43 UT barely on limit is N Portugal. After crossing Atlantic ocean path runs over S USA 3:55-3:58 UT and NW Mexico ~3:58 UT. Please check the path chart for details.

    Clear sky and good luck !!!

    
    The event at one glimpse:
     * date and approx. UT time of event: January 11, 2002 @ 03:40 UT (Europe)
                                                             03:57 UT (USA)
     * magnitude of target star: 7.7
     * magnitude drop [mag]: 4.8
     * estimated maximum duration [s]: 9.1
     * path description: given above
     * Goffin's original chart reference: A03_0140
    
    The occultation path:
     * approximate ground width [km]: 90
     * uncertainty [path widths]: 1.1
     * uncertainty in time [s]: 10
     * map: below
     * remarks: Path uncertainties are given according to nominal star
        position errors and expected asteroid positional accuracy.
    
    Data for the target star:
     * name: TYC 0231-00063-1 = PPM 155817 = SAO 117679
     * constellation: Hydra
     * J2000 position [h,m,s; o,',"]: 09h 25m 22.4952s; +04o 17' 08.052"
     * position source: Tycho-2
     * estimated accuracy ["]: 0.03" (0.02", 0.02")
     * V mag [mag]: 7.71
     * B-V [mag]: +0.26
     * remarks:
        Target star is in Hydra, about 13 degrees southwest of 1.4 mag star alpha Leonis = Regulus = SAO 98967.
        Closer is 3.9 mag star theta Hydrae about 3.4 degrees SW of target. If you will be using larger telescope
        please note there is 11-mag star 32" just north of target star.
        !!! IMPORTANT !!!
        Purple stars in identification chart are so called 'non-star' objects in GSC; in dense fields
        the 'non-stars' are often real stars or blends of close pairs. Be careful about this.
    
    Close finding chart (prepared in GUIDE7):
     * occulted star is in center - labeled with cross
     * field is 25x16 degrees
     * limiting magnitude is 9.5
     * labeled stars have indicated SAO numbers
     * remarks: Second chart is 1x1 degree blowup for larger telescopes.
    
    

    Close finding chart

    Close finding chart Data for the minor planet: * general information: number, name: (441) Bathilde approx. diameter [km]: 73 * orbital information orbit source: calculation Manek source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen) number of used observations: 95 USNO, 10 TMO number of rejected observations: 9 USNO, 1 TMO time covered by the observations: 1998 02 12 - 2002 12 22 rms residuals ["] (RA,DE): 0.07", 0.07" estimated positional accuracy at epoch of event ["]: 0.05", 0.05" remarks: Data for the event: * UT date and time of least geocentric approach: 03:47.5 UT * approx. V mag of minor planet at event [mag]: 12.5 * geocentric parallax of minor planet ["]: 5.077 * magnitude drop [mag]: 4.8 * estimated maximum duration [s]: 9.1 * apparent motion of minor planet ["/h]: 23.11 * angular distance to moon, phase of moon [deg,%]: 114, 56% * remarks: Elements for WinOccult: ============ cut here =========================================== 2003 Jan 11 441 Bathilde 3h 47.5m UT 31-00063-1 7.7 9 25 22.495 4 17 8.05TYC 0231-00063-1 12.5 73 9.1 1.732 -1.530 -3.30 -25.772 4.287 125.06 -21.87 3.7911 -.08274 .57290 -4.50400 -0.65204 -0.00264 0.00183 2000 27.44967932003 1 1.00000202.352869253.9474858.142159 0.083113862.807338092.574009388.515 0.15 RATE 2.0953762 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000 ============ cut here =========================================== Calculator(s): Jan Manek

    Updated path location for (441) Bathilde on January 10/11, 2002

    Updated path location for (441) Bathilde on January 10/11, 2002 Path coordinates: Center Altitude Path Limits E. Longitude Latitude U.T. star sun Limit 1 Limit 2 ........................... shortened ............................. o ' " o ' " h m s o o o ' " o ' " Latitude Latitude 53 0 0 44 41 15 3 37 9 13 -5 45 5 33 44 17 4 52 0 0 44 43 7 3 37 12 14 -6 45 7 25 44 18 56 51 0 0 44 44 51 3 37 15 14 -6 45 9 9 44 20 40 50 0 0 44 46 26 3 37 18 15 -7 45 10 44 44 22 15 49 0 0 44 47 52 3 37 21 16 -8 45 12 10 44 23 41 48 0 0 44 49 10 3 37 24 16 -8 45 13 28 44 24 59 47 0 0 44 50 19 3 37 28 17 -9 45 14 37 44 26 8 46 0 0 44 51 19 3 37 31 18 -9 45 15 37 44 27 9 45 0 0 44 52 11 3 37 35 18 -10 45 16 29 44 28 0 44 0 0 44 52 54 3 37 39 19 -11 45 17 12 44 28 44 43 0 0 44 53 29 3 37 42 20 -11 45 17 47 44 29 18 42 0 0 44 53 55 3 37 47 20 -12 45 18 13 44 29 44 41 0 0 44 54 13 3 37 51 21 -13 45 18 31 44 30 2 40 0 0 44 54 22 3 37 55 22 -13 45 18 40 44 30 11 39 0 0 44 54 22 3 37 59 22 -14 45 18 41 44 30 11 38 0 0 44 54 14 3 38 4 23 -15 45 18 33 44 30 3 37 0 0 44 53 58 3 38 9 24 -15 45 18 17 44 29 46 36 0 0 44 53 33 3 38 13 24 -16 45 17 52 44 29 21 35 0 0 44 52 59 3 38 18 25 -17 45 17 18 44 28 48 34 0 0 44 52 17 3 38 23 26 -17 45 16 36 44 28 5 33 0 0 44 51 27 3 38 29 26 -18 45 15 46 44 27 15 32 0 0 44 50 28 3 38 34 27 -19 45 14 48 44 26 16 31 0 0 44 49 21 3 38 39 28 -19 45 13 41 44 25 8 30 0 0 44 48 5 3 38 45 28 -20 45 12 25 44 23 53 29 0 0 44 46 41 3 38 50 29 -21 45 11 1 44 22 28 28 0 0 44 45 9 3 38 56 30 -21 45 9 29 44 20 56 27 0 0 44 43 28 3 39 2 30 -22 45 7 49 44 19 15 26 0 0 44 41 39 3 39 8 31 -23 45 6 0 44 17 26 25 0 0 44 39 42 3 39 14 31 -24 45 4 4 44 15 28 24 0 0 44 37 37 3 39 20 32 -24 45 1 58 44 13 23 23 0 0 44 35 23 3 39 27 33 -25 44 59 45 44 11 9 22 0 0 44 33 1 3 39 33 33 -26 44 57 24 44 8 47 21 0 0 44 30 32 3 39 40 34 -26 44 54 54 44 6 16 20 0 0 44 27 54 3 39 46 35 -27 44 52 17 44 3 38 19 0 0 44 25 8 3 39 53 35 -28 44 49 31 44 0 52 18 0 0 44 22 13 3 39 60 36 -28 44 46 37 43 57 57 17 0 0 44 19 11 3 40 7 36 -29 44 43 35 43 54 55 16 0 0 44 16 1 3 40 14 37 -30 44 40 26 43 51 44 15 0 0 44 12 43 3 40 21 37 -30 44 37 8 43 48 26 14 0 0 44 9 17 3 40 28 38 -31 44 33 43 43 44 59 13 0 0 44 5 44 3 40 36 39 -32 44 30 9 43 41 25 12 0 0 44 2 2 3 40 43 39 -33 44 26 28 43 37 43 11 0 0 43 58 13 3 40 51 40 -33 44 22 39 43 33 54 10 0 0 43 54 16 3 40 58 40 -34 44 18 43 43 29 56 9 0 0 43 50 11 3 41 6 41 -35 44 14 38 43 25 51 8 0 0 43 45 59 3 41 14 41 -35 44 10 26 43 21 38 7 0 0 43 41 39 3 41 22 42 -36 44 6 7 43 17 18 6 0 0 43 37 11 3 41 30 43 -37 44 1 40 43 12 50 5 0 0 43 32 36 3 41 38 43 -37 43 57 5 43 8 15 4 0 0 43 27 54 3 41 46 44 -38 43 52 23 43 3 32 3 0 0 43 23 4 3 41 55 44 -39 43 47 34 42 58 42 2 0 0 43 18 7 3 42 3 45 -40 43 42 38 42 53 44 1 0 0 43 13 3 3 42 11 45 -40 43 37 34 42 48 40 0 0 0 43 7 52 3 42 20 46 -41 43 32 23 42 43 28 - 1 0 0 43 2 33 3 42 29 46 -42 43 27 5 42 38 9 - 2 0 0 42 57 7 3 42 37 47 -42 43 21 39 42 32 43 - 3 0 0 42 51 34 3 42 46 47 -43 43 16 7 42 27 9 - 4 0 0 42 45 55 3 42 55 47 -44 43 10 28 42 21 29 - 5 0 0 42 40 8 3 43 4 48 -45 43 4 42 42 15 42 - 6 0 0 42 34 15 3 43 13 48 -45 42 58 49 42 9 48 - 7 0 0 42 28 15 3 43 22 49 -46 42 52 49 42 3 48 - 8 0 0 42 22 8 3 43 31 49 -47 42 46 43 41 57 41 - 9 0 0 42 15 55 3 43 41 50 -47 42 40 30 41 51 27 - 10 0 0 42 9 35 3 43 50 50 -48 42 34 10 41 45 7 - 11 0 0 42 3 8 3 43 59 50 -49 42 27 44 41 38 40 - 12 0 0 41 56 36 3 44 9 51 -50 42 21 12 41 32 7 ........................... shortened ............................. - 74 0 0 32 58 59 3 54 29 38 -71 33 23 39 32 34 26 - 75 0 0 32 49 43 3 54 37 37 -70 33 14 23 32 25 11 - 76 0 0 32 40 30 3 54 46 37 -70 33 5 9 32 15 58 - 77 0 0 32 31 19 3 54 54 36 -69 32 55 58 32 6 48 - 78 0 0 32 22 11 3 55 2 35 -68 32 46 50 31 57 40 - 79 0 0 32 13 6 3 55 10 35 -68 32 37 45 31 48 36 - 80 0 0 32 4 4 3 55 18 34 -67 32 28 42 31 39 34 - 81 0 0 31 55 5 3 55 26 33 -66 32 19 43 31 30 35 - 82 0 0 31 46 10 3 55 34 32 -66 32 10 47 31 21 40 - 83 0 0 31 37 18 3 55 41 32 -65 32 1 55 31 12 49 - 84 0 0 31 28 30 3 55 49 31 -64 31 53 6 31 4 1 - 85 0 0 31 19 45 3 55 56 30 -63 31 44 21 30 55 17 - 86 0 0 31 11 5 3 56 3 29 -63 31 35 41 30 46 37 - 87 0 0 31 2 29 3 56 10 29 -62 31 27 4 30 38 2 - 88 0 0 30 53 58 3 56 17 28 -61 31 18 32 30 29 31 - 89 0 0 30 45 31 3 56 23 27 -60 31 10 5 30 21 4 - 90 0 0 30 37 9 3 56 30 26 -59 31 1 43 30 12 42 - 91 0 0 30 28 52 3 56 36 25 -59 30 53 25 30 4 26 - 92 0 0 30 20 40 3 56 42 25 -58 30 45 13 29 56 14 - 93 0 0 30 12 33 3 56 48 24 -57 30 37 6 29 48 8 - 94 0 0 30 4 32 3 56 54 23 -56 30 29 4 29 40 7 - 95 0 0 29 56 37 3 56 59 22 -55 30 21 8 29 32 12 - 96 0 0 29 48 47 3 57 5 21 -54 30 13 18 29 24 23 - 97 0 0 29 41 3 3 57 10 20 -54 30 5 34 29 16 40 - 98 0 0 29 33 26 3 57 15 20 -53 29 57 56 29 9 3 - 99 0 0 29 25 55 3 57 20 19 -52 29 50 25 29 1 32 -100 0 0 29 18 30 3 57 24 18 -51 29 42 60 28 54 8 -101 0 0 29 11 12 3 57 29 17 -50 29 35 42 28 46 50 -102 0 0 29 4 1 3 57 33 16 -49 29 28 30 28 39 40 -103 0 0 28 56 57 3 57 37 15 -48 29 21 26 28 32 36 -104 0 0 28 50 0 3 57 41 15 -48 29 14 28 28 25 40 -105 0 0 28 43 11 3 57 44 14 -47 29 7 39 28 18 50 -106 0 0 28 36 29 3 57 48 13 -46 29 0 56 28 12 9 -107 0 0 28 29 54 3 57 51 12 -45 28 54 21 28 5 35 -108 0 0 28 23 28 3 57 54 11 -44 28 47 54 27 59 8 -109 0 0 28 17 9 3 57 57 10 -43 28 41 35 27 52 50 -110 0 0 28 10 59 3 57 59 9 -42 28 35 24 27 46 40 -111 0 0 28 4 56 3 58 2 9 -42 28 29 22 27 40 38 -112 0 0 27 59 2 3 58 4 8 -41 28 23 28 27 34 45 -113 0 0 27 53 17 3 58 6 7 -40 28 17 42 27 28 60 -114 0 0 27 47 40 3 58 7 6 -39 28 12 5 27 23 23 -115 0 0 27 42 13 3 58 9 5 -38 28 6 37 27 17 56 -116 0 0 27 36 54 3 58 10 4 -37 28 1 18 27 12 37 -117 0 0 27 31 44 3 58 11 3 -36 27 56 8 27 7 28 ........................... shortened ............................. ---------------------------------------------------------------------------- Jan Manek Stefanik Observatory Private : Petrin 205 Werichova 950 118 46 Praha 1 152 00 Praha 5 - 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