CALWELL LUNAR OBSERVATORY

1997 September 16-17 IMMERSION Crater Timing PREDICTIONS (UT)

PREDICTED MID-EVENT CRATER TIMINGS for 60 FEATURES

Record YOUR first contact (1C - where the umbral shadow edge contacts the leading rim of each named feature) and YOUR second contact (2C - where the umbral edge leaves the following rim of each named feature, as shown in Figure 1 of * the Observer's Guide), and/or any other craters you can identify during the eclipse:

Record YOUR third contact (3C - where the umbral shadow edge first reveals the leading rim of each named feature) and YOUR fourth contact (4C - where the umbral edge reveals the following rim of each named feature as shown in Figure 1 of * the Observer's Guide), and/or any other craters you can identify during the eclipse:

IMMERSION TIMING PREDICTIONS				EMERSION TIMING PREDICTIONS
MID-TIME (UT)	LONGITUDE	LATITUDE	FEATURE	MID-TIME(UT)	LONGITUDE	LATITUDE	FEATURE
17h 07m 58s	-90.00	+14.26	FIRST CONTACT	19h 17m 51s	-90.00	-58.40	THIRD CONTACT
17h 11m 18s	-66.50	+21.10	SELEUCUS	19h 22m 49s	-54.60	-44.40	SCHICKARD
17h 11m 26s	-68.60	+26.40	BRIGGS	19h 26m 29s	-66.70	-16.70	CRUGER
17h 12m 02s	-74.00	-03.00	RICCIOLI	19h 28m 10s	-14.40	-58.40	CLAVIUS
17h 13m 30s	-68.30	-05.20	GRIMALDI	19h 28m 57s	-21.70	-49.60	LONGOMONTANUS
17h 14m 10s	-54.90	+09.70	REINER	19h 29m 12s	-74.00	-03.00	RICCIOLI
17h 16m 10s	-47.60	+23.70	ARISTARCHUS	19h 29m 22s	-68.30	-05.20	GRIMALDI
17h 17m 12s	-45.50	+29.00	KRIEGER	19h 30m 57s	-31.80	-32.90	RAMSDEN
17h 17m 38s	-66.70	-16.70	CRUGER	19h 30m 58s	-50.00	-13.80	BILLY
17h 19m 35s	-43.40	+41.60	MAIRAN	19h 32m 57s	-39.80	-17.50	GASSENDI
17h 20m 09s	-38.00	+08.10	KEPLER	19h 33m 58s	-11.20	-43.20	TYCHO
17h 20m 53s	-50.00	-13.80	BILLY	19h 36m 53s	-54.90	+09.70	REINER
17h 22m 49s	-29.10	+23.30	EULER	19h 38m 11s	-22.20	-20.70	BULLIALDUS
17h 25m 22s	-26.00	+46.00	LAPLACE	19h 38m 12s	-13.50	-29.80	PITATUS
17h 25m 51s	-39.80	-17.50	GASSENDI	19h 38m 23s	-66.50	+21.10	SELEUCUS
17h 26m 31s	-20.60	+20.50	PYTHEAS	19h 40m 03s	-68.60	+26.40	BRIGGS
17h 27m 50s	-20.00	+09.70	COPERNICUS	19h 41m 35s	-38.00	+08.10	KEPLER
17h 29m 32s	-13.10	+26.70	TIMOCHARIS	19h 43m 39s	-47.60	+23.70	ARISTARCHUS
17h 30m 57s	-09.00	+46.00	PICO	19h 46m 05s	-45.50	+29.00	KRIEGER
17h 31m 02s	-09.20	+51.40	PLATO	19h 48m 51s	-02.70	-13.50	ALPHONSUS
17h 31m 24s	-11.30	+14.50	ERATOSTHENES	19h 49m 09s	-20.00	+09.70	COPERNICUS
17h 33m 21s	-04.00	+29.70	ARCHIMEDES	19h 49m 39s	-29.10	+23.30	EULER
17h 33m 59s	-01.00	+39.80	PITON	19h 51m 04s	-43.40	+41.60	MAIRAN
17h 34m 31s	-22.20	-20.70	BULLIALDUS	19h 52m 07s	-20.60	+20.50	PYTHEAS
17h 35m 09s	-54.60	-44.40	SCHICKARD	19h 54m 21s	-11.30	+14.50	ERATOSTHENES
17h 35m 26s	+01.20	+33.80	ARISTILLUS	19h 56m 51s	-13.10	+26.70	TIMOCHARIS
17h 35m 39s	-31.80	-32.90	RAMSDEN	19h 57m 15s	-26.00	+46.00	LAPLACE
17h 35m 47s	+01.40	+30.60	AUTOLYCUS	20h 01m 15s	-04.00	+29.70	ARCHIMEDES
17h 36m 16s	+04.50	+40.20	CASSINI	20h 01m 50s	+26.30	-11.40	THEOPHILUS
17h 39m 38s	+17.30	+50.10	ARISTOTELES	20h 02m 33s	-09.00	+46.00	PICO
17h 40m 09s	+16.30	+44.20	EUDOXUS	20h 03m 22s	+09.00	+14.40	MANILIUS
17h 40m 40s	+11.70	+27.70	LINNE	20h 03m 25s	-09.20	+51.40	PLATO
17h 41m 31s	+09.00	+14.40	MANILIUS	20h 03m 34s	+17.20	+02.80	DIONYSIUS
17h 41m 43s	-02.70	-13.50	ALPHONSUS	20h 03m 44s	+01.40	+30.60	AUTOLYCUS
17h 41m 59s	-13.50	-29.80	PITATUS	20h 04m 15s	+01.20	+33.80	ARISTILLUS
17h 43m 58s	+28.20	+45.00	BURG	20h 04m 16s	-01.00	+39.80	PITON
17h 44m 32s	+15.90	+16.20	MENELAUS	20h 04m 39s	+15.30	+09.00	JULIUS CAESAR
17h 45m 39s	+15.30	+09.00	JULIUS CAESAR	20h 06m 28s	+04.50	+40.20	CASSINI
17h 46m 46s	+39.20	+46.70	HERCULES	20h 06m 48s	+15.90	+16.20	MENELAUS
17h 47m 26s	+29.90	+31.80	POSIDONIUS	20h 07m 22s	+11.70	+27.70	LINNE
17h 47m 36s	-21.70	-49.60	LONGOMONTANUS	20h 08m 47s	+32.70	-00.40	CENSORINUS
17h 47m 55s	+17.20	+02.80	DIONYSIUS	20h 09m 05s	+45.00	-10.00	GOCLENIUS
17h 48m 09s	+44.40	+46.60	ATLAS	20h 09m 48s	+23.60	+15.30	PLINIUS
17h 48m 19s	+23.60	+15.30	PLINIUS	20h 10m 52s	+16.30	+44.20	EUDOXUS
17h 48m 20s	+56.50	+53.60	ENDYMION	20h 11m 21s	+17.30	+50.10	ARISTOTELES
17h 48m 29s	-11.20	-43.20	TYCHO	20h 13m 16s	+31.20	+17.60	VITRUVIUS
17h 51m 09s	+31.20	+17.60	VITRUVIUS	20h 13m 21s	+47.60	-01.90	MESSIER
17h 53m 57s	-14.40	-58.40	CLAVIUS	20h 13m 49s	+60.90	-08.90	LANGRENUS
17h 55m 41s	+26.30	-11.40	THEOPHILUS	20h 14m 34s	+28.20	+45.00	BURG
17h 56m 01s	+32.70	-00.40	CENSORINUS	20h 14m 44s	+29.90	+31.80	POSIDONIUS
17h 57m 34s	+46.90	+16.10	PROCLUS	20h 15m 37s	+46.50	+05.60	TARUNTIUS
18h 00m 09s	+46.50	+05.60	TARUNTIUS	20h 17m 30s	+39.20	+46.70	HERCULES
18h 00m 26s	+54.50	+14.50	PICARD	20h 18m 21s	+46.90	+16.10	PROCLUS
18h 01m 48s	+60.00	+15.00	MARE CRISIUM	20h 18m 46s	+44.40	+46.60	ATLAS
18h 02m 23s	+47.60	-01.90	MESSIER	20h 20m 02s	+56.50	+53.60	ENDYMION
18h 03m 19s	+45.00	-10.00	GOCLENIUS	20h 20m 11s	+54.50	+14.50	PICARD
18h 08m 09s	+60.90	-08.90	LANGRENUS	20h 21m 37s	+60.00	+15.00	MARE CRISIUM
18h 15m 14s	+90.00	-43.81	SECOND CONTACT	20h 25m 08s	+90.00	+28.83	FOURTH CONTACT

NOTE: The author has developed a new computer program to predict improved primary contact times using the recently established mean observed umbral oblateness value of 1/102 (Soulsby, 1990).

When applied to the primary contact data for 1997 September 16 the corrected values of primary contacts for 1 C, was 17h 08m 05s, or 8.6s LATER, 2 C at 18h 15m 59s, or 46.5s LATER, 3 C at 19h 17m 38s, or 14.6s EARLIER and 4 C at 20h 25m 05s, or 3s EARLIER than the circumstances given above, each due to oblateness of the umbra.

This web page includes the 1997 Astronomical Almanac data.

A reminder regarding your Observations

Please remember to include your name, site details, instrumentation, timing source and weather conditions in your observer's report with your crater timings, and send your observational data to me by e-mail for prompt analysis.

I hope you have clear conditions and many successful timings.