ASTRON ALMANAC PAGE

Ship's Time: Fri 10 Sep 2021 19:00:00 (UTC +0.0)

Body	Mag	SHA	GHA	Dec	SD	HP	LHA	Azm (Zn)	Alt (Hc)
Sun		190° 46.4'	105° 48.1'	N04° 38.0'	15.9'	0.1'	030° 16.1'	225.7°	45° 22.2'
Moon	17% (+)	143° 54.5'	058° 56.2'	S11° 53.7'	16.2'	59.5'	343° 24.2'	159.8°	35° 53.8'
Mercury	0.2	167° 17.0'	082° 18.7'	S07° 47.5'	0.1'	0.1'	006° 46.7'	189.0°	41° 50.0'
Venus	-4.1	152° 27.5'	067° 29.1'	S12° 12.3'	0.1'	0.1'	351° 57.1'	170.1°	37° 17.7'
Mars	1.8	182° 09.7'	097° 11.4'	N01° 51.5'	0.0'	0.1'	021° 39.4'	212.8°	47° 07.2'
Alioth	1.8	166° 15.9'	081° 17.6'	N55° 50.8'			005° 45.6'	348.4°	73° 40.3'
Alkaid	1.8	152° 54.6'	067° 56.3'	N49° 12.6'			352° 24.3'	027.7°	79° 18.1'
Alphard	2.1	217° 50.7'	132° 52.4'	S08° 44.9'			057° 20.4'	241.1°	18° 07.5'
Alphecca	2.2	126° 06.2'	041° 07.9'	N26° 38.8'			325° 35.9'	104.4°	58° 34.3'
ANTARES	1.0	112° 19.2'	027° 20.9'	S26° 28.7'			311° 48.9'	137.4°	09° 50.7'
ARCTURUS	0.1	145° 50.7'	060° 52.4'	N19° 04.5'			345° 20.4'	144.6°	65° 35.9'
CAPELLA	0.1	280° 25.9'	195° 27.6'	N46° 01.0'			119° 55.6'	322.1°	11° 20.5'
DENEB	1.2	049° 27.3'	324° 29.0'	N45° 21.6'			248° 57.0'	042.8°	15° 17.1'
Denebola	2.1	182° 28.1'	097° 29.8'	N14° 27.3'			021° 57.8'	223.2°	58° 03.8'
Dubhe	1.8	193° 45.1'	108° 46.8'	N61° 38.2'			033° 14.8'	328.1°	60° 25.7'
Eltanin	2.2	090° 43.3'	005° 45.0'	N51° 29.5'			290° 13.0'	051.7°	41° 52.7'
Gienah	2.5	175° 46.7'	090° 48.4'	S17° 39.5'			015° 16.4'	197.0°	30° 38.4'
Kochab	2.1	137° 20.5'	052° 22.2'	N74° 04.3'			336° 50.2'	010.6°	54° 11.9'
Menkent	2.1	148° 01.1'	063° 02.8'	S36° 28.5'			347° 30.8'	169.7°	12° 42.0'
Mirfak	1.8	308° 31.9'	223° 33.6'	N49° 56.1'			148° 01.6'	340.0°	04° 11.6'
Polaris	2.0	315° 02.8'	230° 04.5'	N89° 21.0'			154° 32.5'	359.6°	39° 22.8'
POLLUX	1.1	243° 20.9'	158° 22.6'	N27° 58.4'			082° 50.6'	288.2°	22° 41.0'
PROCYON	0.4	244° 53.9'	159° 55.6'	N05° 10.3'			084° 23.6'	270.4°	07° 36.8'
Rasalhague	2.1	096° 01.0'	011° 02.7'	N12° 32.9'			295° 30.7'	096.7°	27° 30.1'
REGULUS	1.4	207° 37.7'	122° 39.4'	N11° 51.9'			047° 07.4'	249.4°	39° 58.3'
Sabik	2.4	102° 05.9'	017° 07.6'	S15° 45.0'			301° 35.6'	123.0°	12° 14.7'
Schedar	2.2	349° 33.6'	264° 35.3'	N56° 39.2'			189° 03.3'	005.0°	06° 55.4'
SPICA	1.0	158° 25.4'	073° 27.1'	S11° 16.3'			357° 55.1'	177.4°	38° 43.5'
VEGA	0.0	080° 34.9'	355° 36.6'	N38° 48.5'			280° 04.6'	062.9°	30° 28.1'
Zuben_ubi	2.6	136° 59.2'	052° 00.9'	S16° 07.8'			336° 28.9'	153.8°	29° 46.7'
Body	Mag	SHA	GHA	Dec	SD	HP	LHA	Azm (Zn)	Alt (Hc)

Lat	N39° 58.0'
Long	W075° 32.0'

This shade indicates
Hc is between 15° and 65°





Set Present Time

SHIP'S TIME
Year	2021	-	+
Month	9	-	+
Day	10	-	+
Hour	19	-	+
Minute	0	--	++
		-	+
Second	0	--	++
		-	+

Aries
SHA	000° 00.0'
GHA	275° 01.7'
LHA	199° 29.7'

ASTRON SETTINGS PAGE

TYPE OF HORIZON		Default SEA. See User Notes Sections 15 & 16 for other types.
TOO LIGHT SUN Hc		Suggested value -3.0° (Mid Civil Twilight). Range 0.0° to -6.0°.
TOO DARK SUN Hc		Suggested value -9.0° (Mid Nautical Twilight). Range -6.0° to -20.0°.
TYPE OF START UP		LAST USED: Start with date/time set to last used values. PRESENT: (Default). Start with date/time set to present time.
SHOW EXTRA DECIMALS		Recommended Value 0. Shows EXTRA decimal places. Range 0 to 3. Formatting (including plotter and planner) may become ragged when > 0.
SHOW LUNAR ARC DISTANCE		Show on legend bar below Astron and Google Sight Plotters YES: Show sextant arc (LDs) between selected body and Moon at cursor position. NO: (Default). Don't show it.
MSL TEMPERATURE AND PRESSURE		YES: (Default). Always enter MSL Temperature and Pressure. NO: If Observer Alt > 0, enter AMBIENT Temperature and Pressure.
DELTA-T		AUTO: (Default.) Astron uses calculated value for ΔT. MANUAL: User can enter a specific value. Use 0 for Terrestrial Time. (TT/TD).
TIME SYNC OFFSET		When selected, Time Sync shows device system time offset by this amount. Default and recommended value: 0 seconds. Range -200s (Retarded) to +200s (Advanced).
RESET ALL		Reset settings and inputs to default values. Custom Star resets to "Castor"
INCLUDE CUSTOM STAR		Default value: NO. YES: All utilities include the CUSTOM STAR detailed in the pop-up table below. NO: (Default). CUSTOM STAR is hidden.

Custom Star Data (Equinox J2000.0 Epoch J2000.0)
Star Name	RA (D.d)	Dec (+/-D.d)	pm RA (mas/yr)	pm Dec (mas/yr)	Magnitude

NOTES on using this CUSTOM STAR utility. See User Notes / Settings / "Include Custom Star" for more detail. • Astron holds data for a single CUSTOM STAR. • On changing this option to "YES", the CUSTOM STAR becomes visible and becomes the currently selected body. Other bodies can be selected as normal. • On all other pages, the CUSTOM STAR name is preceeded by a "★" distinguishing mark. • The CUSTOM STAR is shown as the last body in the body select list and elsewhere. [Keystroke hint: Press "z" then "⯆"] • When option set to "YES", the CUSTOM STAR is included in all Astron utilities. • When option set to "NO", the star is excluded and this table hidden. • When Astron is closed, CUSTOM STAR data is remembered for next use. • On first use, the CUSTOM STAR is set to Castor (α Geminorum). • When entering values, RA and Dec must be in degrees and decimal degrees. • pm RA values are in milliarcseconds of ARC, not mas of Right Ascension. • Input data must be referenced to J2000.0 Equinox and Epoch. Astron then adjusts to the selected date and time. • See User Notes / Settings / "Include Custom Star" for suggested link to catalogue star data.

ASTRON STAR INFORMATION PAGE

COMMON NAME ORDER
Body	Bayer Name	SHA(°)	Dec(°)	Mag
Acamar	θ Eridani	315	-40	2.9
ACHERNAR	α Eridani	335	-57	0.4
ACRUX	α Crucis	173	-63	0.7
ADHARA	ε Canis Majoris	255	-29	1.5
ALDEBARAN	α Tauri	291	17	1.0
Alioth	ε Ursae Majoris	166	56	1.8
Alkaid	η Ursae Majoris	153	49	1.8
Alnair	α Gruis	28	-47	1.7
Alnilam	ε Orionis	276	-01	1.6
Alphard	α Hydrae	218	-09	2.1
Alphecca	α Coronae Borealis	126	27	2.2
Alpheratz	α Andromedae	358	29	2.0
ALTAIR	α Aquilae	62	09	0.8
Ankaa	α Phoenicis	353	-42	2.6
ANTARES	α Scorpii	112	-26	1.0
ARCTURUS	α Boötis	146	19	0.1
Atria	α Trianguli Australis	107	-69	1.9
Avior	ε Carinae	234	-60	1.9
Bellatrix	γ Orionis	278	06	1.6
BETELGEUSE	α Orionis	271	07	1.5
CANOPUS	α Carinae	264	-53	-0.7
CAPELLA	α Aurigae	280	46	0.1
DENEB	α Cygni	49	45	1.2
Denebola	β Leonis	182	14	2.1
Diphda	β Ceti	349	-18	2.0
Dubhe	α Ursae Majoris	194	62	1.8
Elnath	β Tauri	278	29	1.7
Eltanin	γ Draconis	91	51	2.2
Enif	ε Pegasi	34	10	2.4
FOMALHAUT	α Piscis Austrini	15	-30	1.2
Gacrux	γ Crucis	172	-57	1.6
Gienah	y Corvi	176	-18	2.5
HADAR	β Centauri	149	-60	0.6
Hamal	α Arietis	328	24	2.0
Kaus_Aust	ε Sagittarii	84	-34	1.8
Kochab	β Ursae Minoris	137	74	2.1
Markab	α Pegasi	14	15	2.5
Menkar	α Ceti	314	04	2.5
Menkent	θ Centauri	148	-36	2.1
Miaplacidus	β Carinae	222	-70	1.7
Mirfak	α Persei	309	50	1.8
Nunki	σ Sagittarii	76	-26	2.1
Peacock	α Pavonis	53	-57	1.9
Polaris	α Ursae Minoris	315	89	2.0
POLLUX	β Geminorum	243	28	1.1
PROCYON	α Canis Minoris	245	05	0.4
Rasalhague	α Ophiuchi	96	13	2.1
REGULUS	α Leonis	208	12	1.4
RIGEL	β Orionis	281	-08	0.1
RIGIL_KENT	α Centauri	140	-61	-0.3
Sabik	η Ophiuchi	102	-16	2.4
Schedar	α Cassiopeiae	350	57	2.2
Shaula	λ Scorpii	96	-37	1.6
SIRIUS	α Canis Majoris	258	-17	-1.5
SPICA	α Virginis	158	-11	1.0
Suhail	λ Velorum	223	-44	2.2
VEGA	α Lyrae	81	39	0.0
Zuben_ubi	α Librae	137	-16	2.6

MAGNITUDE ORDER
Body	Mag
SIRIUS	-1.5
CANOPUS	-0.7
RIGIL_KENT	-0.3
VEGA	0.0
ARCTURUS	0.1
CAPELLA	0.1
RIGEL	0.1
ACHERNAR	0.4
PROCYON	0.4
HADAR	0.6
ACRUX	0.7
ALTAIR	0.8
ALDEBARAN	1.0
ANTARES	1.0
SPICA	1.0
POLLUX	1.1
DENEB	1.2
FOMALHAUT	1.2
REGULUS	1.4
ADHARA	1.5
BETELGEUSE	1.5
Alnilam	1.6
Bellatrix	1.6
Gacrux	1.6
Shaula	1.6
Alnair	1.7
Elnath	1.7
Miaplacidus	1.7
Alioth	1.8
Alkaid	1.8
Dubhe	1.8
Kaus_Aust	1.8
Mirfak	1.8
Atria	1.9
Avior	1.9
Peacock	1.9
Alpheratz	2.0
Diphda	2.0
Hamal	2.0
Polaris	2.0
Alphard	2.1
Denebola	2.1
Kochab	2.1
Menkent	2.1
Nunki	2.1
Rasalhague	2.1
Alphecca	2.2
Eltanin	2.2
Schedar	2.2
Suhail	2.2
Enif	2.4
Sabik	2.4
Gienah	2.5
Markab	2.5
Menkar	2.5
Ankaa	2.6
Zuben_ubi	2.6
Acamar	2.9

SHA ORDER
Body	SHA(°)	Dec(°)	Mag
Markab	014	15.3	2.5
FOMALHAUT	015	-29.5	1.2
Alnair	028	-46.9	1.7
Enif	034	10.0	2.4
DENEB	049	45.4	1.2
Peacock	053	-56.7	1.9
ALTAIR	062	08.9	0.8
Nunki	076	-26.3	2.1
VEGA	081	38.8	0.0
Kaus_Aust	084	-34.4	1.8
Eltanin	091	51.5	2.2
Rasalhague	096	12.5	2.1
Shaula	096	-37.1	1.6
Sabik	102	-15.8	2.4
Atria	107	-69.1	1.9
ANTARES	112	-26.5	1.0
Alphecca	126	26.6	2.2
Zuben_ubi	137	-16.1	2.6
Kochab	137	74.1	2.1
RIGIL_KENT	140	-60.9	-0.3
ARCTURUS	146	19.1	0.1
Menkent	148	-36.5	2.1
HADAR	149	-60.5	0.6
Alkaid	153	49.2	1.8
SPICA	158	-11.3	1.0
Alioth	166	55.8	1.8
Gacrux	172	-57.2	1.6
ACRUX	173	-63.2	0.7
Gienah	176	-17.7	2.5
Denebola	182	14.5	2.1
Dubhe	194	61.6	1.8
REGULUS	208	11.9	1.4
Alphard	218	-08.7	2.1
Miaplacidus	222	-69.8	1.7
Suhail	223	-43.5	2.2
Avior	234	-59.6	1.9
POLLUX	243	28.0	1.1
PROCYON	245	05.2	0.4
ADHARA	255	-29.0	1.5
SIRIUS	258	-16.7	-1.5
CANOPUS	264	-52.7	-0.7
BETELGEUSE	271	07.4	1.5
Alnilam	276	-01.2	1.6
Elnath	278	28.6	1.7
Bellatrix	278	06.4	1.6
CAPELLA	280	46.0	0.1
RIGEL	281	-08.2	0.1
ALDEBARAN	291	16.6	1.0
Mirfak	309	49.9	1.8
Menkar	314	04.2	2.5
Polaris	315	89.4	2.0
Acamar	315	-40.2	2.9
Hamal	328	23.6	2.0
ACHERNAR	335	-57.1	0.4
Diphda	349	-17.9	2.0
Schedar	350	56.7	2.2
Ankaa	353	-42.2	2.6
Alpheratz	358	29.2	2.0

DECLINATION ORDER
Body	SHA(°)	Dec(°)	Mag
Polaris	315	89.4	2.0
Kochab	137	74.1	2.1
Dubhe	194	61.6	1.8
Schedar	350	56.7	2.2
Alioth	166	55.8	1.8
Eltanin	091	51.5	2.2
Mirfak	309	49.9	1.8
Alkaid	153	49.2	1.8
CAPELLA	280	46.0	0.1
DENEB	049	45.4	1.2
VEGA	081	38.8	0.0
Alpheratz	358	29.2	2.0
Elnath	278	28.6	1.7
POLLUX	243	28.0	1.1
Alphecca	126	26.6	2.2
Hamal	328	23.6	2.0
ARCTURUS	146	19.1	0.1
ALDEBARAN	291	16.6	1.0
Markab	014	15.3	2.5
Denebola	182	14.5	2.1
Rasalhague	096	12.5	2.1
REGULUS	208	11.9	1.4
Enif	034	10.0	2.4
ALTAIR	062	08.9	0.8
BETELGEUSE	271	07.4	1.5
Bellatrix	278	06.4	1.6
PROCYON	245	05.2	0.4
Menkar	314	04.2	2.5
Alnilam	276	-01.2	1.6
RIGEL	281	-08.2	0.1
Alphard	218	-08.7	2.1
SPICA	158	-11.3	1.0
Sabik	102	-15.8	2.4
Zuben_ubi	137	-16.1	2.6
SIRIUS	258	-16.7	-1.5
Gienah	176	-17.7	2.5
Diphda	349	-17.9	2.0
Nunki	076	-26.3	2.1
ANTARES	112	-26.5	1.0
ADHARA	255	-29.0	1.5
FOMALHAUT	015	-29.5	1.2
Kaus_Aust	084	-34.4	1.8
Menkent	148	-36.5	2.1
Shaula	096	-37.1	1.6
Acamar	315	-40.2	2.9
Ankaa	353	-42.2	2.6
Suhail	223	-43.5	2.2
Alnair	028	-46.9	1.7
CANOPUS	264	-52.7	-0.7
Peacock	053	-56.7	1.9
ACHERNAR	335	-57.1	0.4
Gacrux	172	-57.2	1.6
Avior	234	-59.6	1.9
HADAR	149	-60.5	0.6
RIGIL_KENT	140	-60.9	-0.3
ACRUX	173	-63.2	0.7
Atria	107	-69.1	1.9
Miaplacidus	222	-69.8	1.7

Sextant Arc (LDs)	Moon	Sun	==== User Entered Values ====
Deg	Limb	Limb	Ship's Date	Ship's Time	Ass Lat	Ass Long
M.m			10 Sep 2021	19:00:00	N39° 58.0'	W075° 32.0'
60° 00.0'			==== Lunar Revised Values ====
IC: 0.0'	SD/Aug Corr: +16.4'	SD Corr: +15.9'	Ship's Date	Ship's Time	Calc Lat
Apparent Lunar Distance: 60° 32.3'						Calc Long
Cleared Lunar Distance: 60° 03.1'
WARNING: Large difference: Entered and calculated sextant arc. WARNING: Lunar not calculated as Lunar QI below 40%.

ADVISORY: Moon lower limb not illuminated. Illum. angle 058°
SUPPLEMENTARY INFORMATION Quality Indices: Alignment: 97%. Lunar: 0%. Calc Lat: 91%. Moon Longitude: 33%. Sun Longitude: 69%. Moon orbital direction at Mer Pass: 113° . Relative angle of Sun to Moon's motion: 6°. Moon phase is 17%, waxing. Sun lunar distance is increasing. Moon: GHA: 058° 56.2', Dec: S11° 53.7', Refr Corr: -1.2', HP: 59.5', Px Corr: 45.5' Sun: GHA: 105° 48.1', Dec: N04° 38.0', Refr Corr: -0.8', HP: 0.1', Px Corr: 0.1'
Calculated Moon sextant altitude (Hs) is 34° 53.1'.			The calculated values on the left are only valid when entered date, time, assumed position, IC, HoE, Temp, Press and limbs are all accurate. They can be used for pre-setting sextant and for lunar practice with no horizon or when inputs preclude valid time/longitude calculation.
Calculated Sun sextant altitude (Hs) is 45° 42.0'.
Calculated sextant lunar arc (LDs) is 49° 19.7'.
Difference from calculated LDs is 10° 40.3'

Lunar Quality over 60% triggers Home Page pop-up.

ASTRON: Integrated Astro Navigation Software				Home Page			V2.219. 2021 Sept 3
Date and Time Input						Watch Corr		Daylight
Year	Month	Day	Hour	Minute	Second	Secs (Slow +ve)		Saving

						Delta-T: 69.8 secs
Body Data	Equation	GHA of		GHA of	Dec of	UTC: Fri 10 Sep 2021 19:00:00
Body:	of Time	Aries	Sun	Sun	Sun	Ship's Time: Fri 10 Sep 2021 19:00:00 (UTC +0.0)
	+3^m 12^s	275° 01.7'	190° 46.4'	105° 48.1'	N04° 38.0'	Ship's Times: Sun between -9.0° and -3.0°
						Observation	AM: 09:55 until 10:27
						Windows	PM: 23:30 until 24:00
Apparent Body Position							Bearing (°T)	Altitude (°)
Assumed	Assumed					Unidentified body?
Latitude	Longitude					CAPELLA	322	11
Deg	Deg			Calculated	Calculated		Sun	CAPELLA
M.m	M.m	LHA of	LHA of	Sun	Sun	086° 06.5'
		Aries	Sun	Azimuth (Zn)	Altitude (Hc)	Lock body to CAPELLA?
N39° 58.0'	W075° 32.0'	199° 29.7'	030° 16.1'	225.7°	45° 22.2'	Sun: Geocentric Lunar Distance: 049° 26.5'
						Lunar Sight Opportunity
Sextant Altitude Corrections		Observer Alt
Sextant	Index		MSL Temp	MSL Press		SD	HP
Altitude (Hs)	Correction (IC)					15.9'	0.1'
Deg	(Off Arc +ve)	Eye Height (HoE)	(std 10°C)	(std 1010 hPa)	Limb	SD Corr	Parallax Corr	Observed
M.m	M.m					-15.9'	+0.1'	Altitude (Ho)
50° 00.0'	50° 00.0'	49° 56.9'		49° 56.1'		49° 40.2'	49° 40.3'	49° 40.3'
		Dip Corr: -3.1'		Refr Corr: -0.8'
Azimuth and Intercept		Horizon: 3.6nm.			Calc Hs	Sun (UL). 10 Sep Ship's Date & Time. HoE 3.0m
225.7° 258.1nm Towards			Shore Dist (nm):		45° 42.0'	Rise	Mer. Passage	Set
						10:38:18	16:58:58	23:18:56

===== ADVANCE / RETIRE ALL LoP's TO THIS SHIP'S TIME =====				COG	SOG
Day	Hour	Minute	Second	(Degs T)	(Knots)

Sun		SD: 15.9'	Sun	Sun
	Limb	SD Corr	Apparent	Cleared
Altitude (Hs)	Upper	-15.9'	Alt (Ha)	Alt (Hcl)
50° 00.0'			49° 41.1'	49° 40.3'
Use calc Hs	( 45° 42.0'. Practice Mode only.)

Corrections for observer movement and rate of change of body declination					Input data invalid for Meridian Passage

COG (degs T)	SOG (knots)	Dec Rate (mins/hour)	Observer Northings	Time Correction

		-1.0'	0.0 knots		Ship's Time	Latitude	Longitude






WARNING: Home Page inputs not valid for a Meridian Passage sight for Sun

See User Notes Section 11 for detailed explanation. Supplementary Information: Sun GHA Rate: 15° 00.2'

ASTRON SIGHT LOG AND PLOTTER

SIGHT PLANNER & SKY CHART

ASTRON ALMANAC PAGE

ASTRON SETTINGS PAGE

ASTRON STAR INFORMATION PAGE

ASTRON LUNARS PAGE

ASTRON MERIDIAN PASSAGE PAGE

Body	Mag	Azm(°)	Alt(°)
Schedar	2.2	005	07
Kochab	2.1	011	54
Alkaid	1.8	028	79
DENEB	1.2	043	15
Eltanin	2.2	052	42
VEGA	0.0	063	30
Rasalhague	2.1	097	28
Alphecca	2.2	104	59
Sabik	2.4	123	12
ANTARES	1.0	137	10
ARCTURUS	0.1	145	66
Zuben_ubi	2.6	154	30
Moon	17% (+)	160	36
Menkent	2.1	170	13
Venus	-4.1	170	37
SPICA	1.0	177	39
Mercury	0.2	189	42
Gienah	2.5	197	31
Mars	1.8	213	47
Denebola	2.1	223	58
Sun		226	45
Alphard	2.1	241	18
REGULUS	1.4	249	40
PROCYON	0.4	270	08
POLLUX	1.1	288	23
CAPELLA	0.1	322	11
Dubhe	1.8	328	60
Mirfak	1.8	340	04
Alioth	1.8	348	74
Polaris	2.0	000	39

Altitude (Hs)	Moon	SD: 16.2'	Moon	Moon
Deg	Limb	SD/Aug Corr	Apparent	Cleared
M.m		+16.4'	Alt (Ha)	Alt (Hcl)
40° 00.0'			40° 13.3'	40° 57.7'
Use calc Hs	( 34° 53.1'. Practice Mode only.)