cmpbsdb@gitpyr.UUCP (Don Barry) (10/30/85)
In the following ephemeredes, the apparent position of each
comet is indicated at the first hour after rise on every
fourth day. AZ refers to azimuth, EL refers to elevation,
RANGE refers to distance in astronomical units from earth,
LHA is the local hour angle, RA and DEC are 1950 epoch
equatorial cooordinates, HDG is counterclockwise direction
from north of the trajectory, MAG is estimated magnitude,
and D/D is apparent speed in degrees per day. AZ and EL
are strictly correct only in Atlanta, GA, as is LHA, but the
other elements are valid worldwide.
Orbital elements for comets obtained from International
Astronomical Union bulletins, most computed by Brian Marsden.
Elements:
Inclination Longitude Longitude Major Minor Perihelion
Ascending Perihelion Axis Axis Time
Node
Halley 162.23928 58.14536 169.99345 17.9411 0.58710 46470.45175
Giacobini-Z 31.87829 194.70595 7.19482 3.5157 1.02826 46313.24907
Hartley-Good 79.897?? 357.702?? 84.742?? 0.69435 ** 46408.092??
Thiele 139.174?? 52.3315? 105.156?? 1.31711 ** 46417.2458?
** - denotes parabolic comet, major axis is perihelion distance.
Note - Perihelion time given in modified Julian day format - this
is Julian date-678882, which, if memory serves, references to
Jan 1, 1900 rather than 0 AD. Nota Bene- Julian days begin at Noon,
not midnight, so conversion to ET requires subtracting 0.5 days.
Bonne Chance!
SATELLITE EPHEMERIS FOR ATLANTA
FROM 06:30 PM EST, FRIDAY, 01 NOVEMBER, 1985 UNTIL 06:11 AM EST
TIME(EST) AZ EL H RANGE LHA RA/1950 D/1950 HDG MAG
07:00:00 PM 231.6 49.0 00.71 02:04.3 19:01.5 +04D26 304 +06.8
HARTLEY-GOOD D/D=0.97
07:00:00 PM 056.8 28.2 00.53 18:39.0 02:26.3 +41D24 275 +08.2
COMET THIELE (1985M) D/D=3.57
09:00:00 PM 069.9 09.5 01.04 17:47.8 05:18.0 +21D54 274 +08.1
HALLEY'S COMET D/D=1.31
01:00:00 AM 126.5 03.9 00.74 19:42.6 07:24.6 -27D06 182 +09.9
GIACOBINI-ZINNER D/D=0.46
SATELLITE EPHEMERIS FOR ATLANTA
FROM 06:27 PM EST, TUESDAY, 05 NOVEMBER, 1985 UNTIL 06:14 AM EST
TIME(EST) AZ EL H RANGE LHA RA/1950 D/1950 HDG MAG
07:00:00 PM 063.0 45.6 00.52 20:15.5 01:05.8 +41D04 261 +08.1
COMET THIELE (1985M) D/D=3.12
07:00:00 PM 242.0 45.5 00.76 02:34.3 18:47.3 +06D53 303 +06.7
HARTLEY-GOOD D/D=0.86
08:00:00 PM 066.4 04.6 00.94 17:21.8 04:59.6 +22D08 272 +07.7
HALLEY'S COMET D/D=1.65
01:00:00 AM 130.3 05.1 00.76 19:58.1 07:24.9 -29D08 189 +10.1
GIACOBINI-ZINNER D/D=0.42
SATELLITE EPHEMERIS FOR ATLANTA
FROM 06:24 PM EST, SATURDAY, 09 NOVEMBER, 1985 UNTIL 06:17 AM EST
TIME(EST) AZ EL H RANGE LHA RA/1950 D/1950 HDG MAG
07:00:00 PM 071.7 62.1 00.55 21:43.5 23:53.8 +37D31 249 +08.1
COMET THIELE (1985M) D/D=2.49
07:00:00 PM 250.4 41.4 00.82 03:02.7 18:34.7 +09D00 301 +06.5
HARTLEY-GOOD D/D=0.78
07:00:00 PM 063.4 00.8 00.84 17:00.9 04:36.1 +22D15 270 +07.3
HALLEY'S COMET D/D=2.03
01:00:00 AM 134.1 06.3 00.78 20:14.4 07:24.3 -30D56 196 +10.3
GIACOBINI-ZINNER D/D=0.38
SATELLITE EPHEMERIS FOR ATLANTA
FROM 06:22 PM EST, WEDNESDAY, 13 NOVEMBER, 1985 UNTIL 06:21 AM EST
TIME(EST) AZ EL H RANGE LHA RA/1950 D/1950 HDG MAG
07:00:00 PM 069.6 09.4 00.76 17:46.6 04:06.2 +22D04 267 +06.9
HALLEY'S COMET D/D=2.41
07:00:00 PM 257.4 37.0 00.87 03:30.0 18:23.2 +10D48 297 +06.3
HARTLEY-GOOD D/D=0.72
07:00:00 PM 088.8 75.9 00.62 22:52.7 23:00.5 +32D33 241 +08.2
COMET THIELE (1985M) D/D=1.90
01:00:00 AM 137.9 07.6 00.81 20:31.7 07:22.9 -32D33 205 +10.5
GIACOBINI-ZINNER D/D=0.34
SATELLITE EPHEMERIS FOR ATLANTA
FROM 06:20 PM EST, SUNDAY, 17 NOVEMBER, 1985 UNTIL 06:24 AM EST
TIME(EST) AZ EL H RANGE LHA RA/1950 D/1950 HDG MAG
07:00:00 PM 149.9 83.5 00.70 23:45.3 22:23.8 +27D45 235 +08.4
COMET THIELE (1985M) D/D=1.42
07:00:00 PM 263.2 32.4 00.91 03:56.7 18:12.4 +12D19 293 +06.1
HARTLEY-GOOD D/D=0.67
07:00:00 PM 076.7 19.5 00.69 18:39.2 03:29.4 +21D21 264 +06.5
HALLEY'S COMET D/D=2.68
12:00:00 PM 132.6 00.5 00.83 19:49.5 07:20.6 -33D57 215 +10.7
GIACOBINI-ZINNER D/D=0.32
SATELLITE EPHEMERIS FOR ATLANTA
FROM 06:18 PM EST, THURSDAY, 21 NOVEMBER, 1985 UNTIL 06:27 AM EST
TIME(EST) AZ EL H RANGE LHA RA/1950 D/1950 HDG MAG
07:00:00 PM 085.3 30.9 00.64 19:37.7 02:46.7 +19D52 260 +06.1
HALLEY'S COMET D/D=2.77
07:00:00 PM 268.3 27.5 00.96 04:22.9 18:01.9 +13D33 287 +05.9
HARTLEY-GOOD D/D=0.64
07:00:00 PM 212.2 78.7 00.80 00:26.2 21:58.6 +23D42 232 +08.6
COMET THIELE (1985M) D/D=1.07
12:00:00 PM 136.2 02.4 00.86 20:08.4 07:17.6 -35D09 225 +10.9
GIACOBINI-ZINNER D/D=0.30
--
Don Barry (Chemistry Dept) CSnet: cmpbsdb%gitpyr.GTNET@gatech.CSNET
Georgia Institute of Technology BITNET: CMPBSDB @ GITVM1
Atlanta, GA 30332 ARPA: cmpbsdb%gitpyr.GTNET%gatech.CSNET@csnet-relay.ARPA
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