From: KutchScience
Sent: Wednesday, May 21, 2003 11:55 AM

On 8th June 2004 the planet Venus will cross the Sun's disk as seen
from Earth. It will cut into the solar disk at about 5:20am in the
morning and will pass off the other limb at about 11:23am. The last
occasion on which this happened was 1882, over a century ago.

Looking at the Sun at any time is potentially dangerous and can
result in serious eye damage or blindness. The safest way to view the
Sun is indirectly using a projection method.


VENUS Radius vector: 0.7261900 AU (109 million km) and SUN Radius
vector: 1.0150791 AU (152 million km)

ON 8th June Venus is at 0. : 0.7262 AU from Sun so 0.2889 AU from
Earth (1.0150791-0. 0.7262). And VENUS Diameter is 12012KM which
covers area of Sun about 12012 x 1.0151/0.2889 = 42206 Km Sun area.
This is greater part of the Sun than VENUS Diameter.

Sun D= 1391980 and divide by area covered by VENUS 42206, Gives us
how big area of Sun is covered by Planet Venus of 12012 Km diameter.
1391980 /42206 =32.98. So it covers nearly about 1/33of the Sun.
You may view the Sun directly only through a special filter made for
safe solar viewing. If you are not certain that a filter is approved
and safe or you have any other doubts - DO NOT USE IT.
Times of Transit 8th June 2004
All times given in UT (h:m:s).
Dec. 1631
Dec. 1639

June 1761
June 1769

Dec. 1874
Dec. 1882

June 2004
June 2012

Dec. 2117
Dec. 2125

External Ingress 05:19:57 (IST 10:49:57)
Internal Ingress 05:39:39 (IST 11:09:39)
Internal Egress 11:04:06 (IST 16:34:06)
External Egress 11:23:15 (IST 16:53:15)
As you can see from the list below, transits of Venus across the
Sun's disk are very rare (there are only about 12 per millennium!).
We are quite lucky that two transits are going to happen in the next
few years although the second one is only partially visible from some
parts of Europe.
There is a curious 243 year repeating pattern with two transits in
December (around the 8th) 8 years apart. Then wait 121 and half
years, then two June transits (around 7th), again 8 years apart. Then
wait 105 and half years and the pattern repeats again.

Information about Venus for 08 Jun 2004 05:00:40
(Julian day number 2453164.70880)
Local Information
Apparent topocentric coordinates for the epoch of date:
Right ascension: 5h 7m 50.39s
Declination: +22° 45' 5.7"
Constellation: Taurus
Altitude: 8° 31' 55"
Azimuth: 62° 49' 41"
Rise: 3h 47m 31s
Transit: 12h 8m 16s
Set: 20h 27m 25s
Geocentric Information
Apparent geocentric coordinates for the epoch of date:
Right ascension: 5h 7m 49.135s
Declination: +22° 45' 30.29"
True distance: 0.2888833 AU (43 million km)
Horizontal parallax: 30.44"
Heliocentric Information
Ecliptic coordinates for the epoch of date:
Ecliptic longitude: 257° 39' 19.4"
Ecliptic latitude: -0° 3' 19.8"
Radius vector: 0.7261900 AU (109 million km)
Physical Information
Magnitude: -3.7
Phase: 0.000
Phase angle: 180.0°
Elongation: 0.0°
Diameter: 57.74"
Light time: 0h 2m 24.2s
Position angle of the bright limb: 294.5°
Mass: 4.8690e+024 kg (0.815 x Earth)
Mean equatorial radius: 6051.8 km (0.9488 x Earth)
Maximum angular diameter: 60.2"
Minimum geocentric distance: 0.277 AU
Geometric flattening: 0
Sidereal rotation period: 243d 0h 26m 56s (retrograde)
Mean density: 5.24 g/cm^3
Geometric albedo: 0.65 Information about Sun for 08 Jun 2004 05:00:40
(Julian day number 2453164.70880)
Local Information
Apparent topocentric coordinates for the epoch of date:
Right ascension: 5h 6m 42.74s
Declination: +22° 52' 23.6"
Constellation: Taurus
Altitude: 8° 46' 41"
Azimuth: 62° 58' 21"
Rise: 3h 42m 53s
Transit: 12h 9m 9s
Set: 20h 35m 54s
Geocentric Information
Apparent geocentric coordinates for the epoch of date:
Right ascension: 5h 6m 42.384s
Declination: +22° 52' 30.62"
True distance: 1.0150685 AU (152 million km)
Horizontal parallax: 8.66"
Heliocentric Information
Ecliptic coordinates for the epoch of date:
Ecliptic longitude: 77° 45' 6.0"
Ecliptic latitude: -0° 0' 0.1"
Radius vector: 1.0150791 AU (152 million km)
Physical Information
Magnitude: -26.8
Light time: 0h 8m 26.5s
Mass: 1.9891e+030 kg (3.329e+005 x Earth)
Mean equatorial radius: 696000 km (109.1 x Earth)

Events for Tuesday 08 Jun 2004

00:26 Pluto transits the meridian
00:28 Uranus rises
00:44 Moon rises
00:45 Jupiter sets
01:24 Start of nautical twilight
02:51 Start of civil twilight
03:11 Mercury rises
03:43 Sun rises
03:48 Venus rises
04:14 Neptune transits the meridian
05:08 Moon transits the meridian
05:10 Pluto sets
05:38 Uranus transits the meridian
05:38 Saturn rises
06:04 Mars rises
08:44 Neptune sets
09:45 Moon sets
10:47 Uranus sets
11:00 Jupiter rises
11:17 Mercury transits the meridian
12:08 Venus transits the meridian
12:09 Sun transits the meridian
13:57 Saturn transits the meridian
14:30 Mars transits the meridian
17:51 Jupiter transits the meridian
19:26 Mercury sets
19:39 Pluto rises
20:27 Venus sets
20:36 Sun sets
21:28 End of civil twilight
22:17 Saturn sets
22:55 Mars sets
22:56 End of nautical twilight
23:39 Neptune rises


From Yours : Dr. BHUDIA.- Science Group Of INDIA.
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