[AZ-Observing] Re: Has Saturn *Ever* Transited the Crab Nebula?
- From: SaguaroAstro@xxxxxxx
- To: az-observing@xxxxxxxxxxxxx
- Date: Fri, 3 Jan 2003 19:26:01 EST
All,
Jenn does pose the tough ones. Anyway According to the table below generated
from Skymap Pro v9 Saturn has tranioted the Crab twice before. The first
event was on July 24 1678 at 0303UT the next event was on Jan 9 1738 at
1952UT.
The rest of the events (I ran a search for minimum separation) seem to occur
every 29-30 years, and although they pass close to M1 they miss by a few
minutes. Probably made nice conjuctions if anyone was watching.
Date (UT) Separation Dec El
1531 Jun 07 08:23 0° 07' 58" +21° 41' 7.4°
1560 Jul 26 06:40 0° 05' 12" +21° 31' 54.6°
1590 Jun 12 01:07 0° 09' 37" +21° 47' 2.5°
1619 Dec 13 03:52 0° 07' 09" +21° 33' 177.4°
1649 Jun 06 06:06 0° 11' 40" +21° 52' 3.6°
1678 Jul 24 03:03 0° 02' 02" +21° 43' 41.7°
1708 Jun 02 10:05 0° 13' 42" +21° 59' 8.4°
1738 Jan 09 19:52 0° 03' 29" +21° 49' 150.9°
1767 May 26 00:48 0° 13' 51" +22° 03' 16.4°
1797 Feb 04 03:56 0° 11' 03" +22° 00' 125.2°
1825 Sep 18 12:53 0° 12' 14" +21° 41' 93.6°
1856 Feb 23 03:10 1° 01' 56" +22° 14' 109.3°
1884 Aug 22 19:23 0° 06' 32" +21° 49' 67.5°
1914 Jun 23 05:10 0° 09' 36" +22° 06' 8.0°
1943 Dec 13 22:17 0° 05' 56" +21° 52' 177.3°
1973 Jun 13 20:28 0° 16' 36" +22° 12' 1.7°
2003 Jan 05 00:41 0° 01' 11" +22° 02' 159.8
See you at Sentinel
Rick Tejera
Editor SACnews
Saguaro Astronomy Club
Phoenix, Arizona
SaguaroAstro@xxxxxxx
www.saguaroastro.org
In a message dated 1/3/2003 11:40:08 US Mountain Standard Time,
polakis@xxxxxxx writes:
> Jennifer Keller asked me if Saturn has transited the Crab Nebula before.
> I figured it must have, since M1 is so near the ecliptic, and Saturn
> passes it every 30 years. But I think she was one step ahead of me when
> she asked where Saturn was in 1054. It just occurred to me that the Crab
> Nebula hasn't been there "forever", like most of the objects we observe.
>
> So here's the planetarium software exercise. Find out if Saturn has
> passed in front of the Crab Nebula in any of its 31 orbits since it formed
> in 1054. I can't do it, as I'm currently at work, though you'd hardly
> believe that based on fluffy e-mails messages such as this one.
>
> Tom
>
>
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