Tropiocs On Other Planets

robastor · Aug 14, 2007

On Earth, there is the Tropic Of Cancer and Tropic Of Capricorn. What are the tropic names on all the other major solar system bodies?

MeteorWayne · Aug 14, 2007

AFAIK, they don't have such names, but I will check. With no humans watching to name them, it might not be a priority. I'm sure if any of the other SDC crowd knows, they will chime in. Welcome to SDC!! <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

vogon13 · Aug 14, 2007

Furthest north and south of equator sun can appear directly ovefrhead during the course of a planetary year would be applicable to Neptune, Saturn, Jupiter, (barely) and Mars. Does not seem to be 'conventionally' applicable to Uranus, Mercury, and Venus. Would be applicable on earth's moon, btw . . . <div class="Discussion_UserSignature"> TPTB went to Dallas and all I got was Plucked !!So many people, so few recipes !!Let's clean up this stinkhole !! </div>

dragon04 · Aug 15, 2007

AFAIK, no other body has "named tropics". <div class="Discussion_UserSignature"> "2012.. Year of the Dragon!! Get on the Dragon Wagon!". </div>

alokmohan · Aug 15, 2007

Surely it can be interesting field of study.

robastor · Aug 15, 2007

I found mention of a few. Mars has the Tropic of Aquarius and Tropic Of Leo. Titan has the Tropic Of Taurus and Tropic Of Ophiuchus. Anyone know others? Or, where I can go to find them? Thanks! Rob

3488 · Aug 15, 2007

That is correct RobAstor. Saturn: Tropic of Taurus & Tropic of Ophiuchus. Uranus: Tropic of Taurus & Tropic of Ophiuchus. Neptune: Tropic of Aquarius & Tropic of Leo. Asteroid 433 Eros: Tropic of Corvus & Tropic of Pisces. Hope this helps. List of other object Polar Stars here too. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

robastor · Aug 15, 2007

Thanks for the information.

I take it Mercury, Venus, and many of the other objects don't have named Tropics, correct? I find it fascinating to know what they would be for Pluto, Sedna, Eris, and many of the other distant bodies, if they were determined.

3488 · Aug 15, 2007

Another fact, the Earth's tropics should be renamed. Tropic of Gemini & Tropic of Sagittarius. Pluto's are the Tropic of Cancer & Tropic of Capricorn, ironically. Regarding Eris, Sedna, Orcus, Quaoar, etc, we do not know their poles of rotation as yet. Mercury, Venus & Jupiter, really do not have any, as they rotate upright. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

robastor · Aug 15, 2007

Thanks again for the information. Also, thanks for the pole stars list.

3488 · Aug 15, 2007

You are very welcome RobAstor. I quite enjoy researching this sort of thing. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

robastor · Aug 15, 2007

Where did you find that information? <img src="/images/icons/smile.gif" />

3488 · Aug 16, 2007

Hi RobAstor. I have Redshift 5 & Celestia. Quite often I place myself on other planets & moons with these & run through their seasons (if they have any), view the sun move through the constellations (Eris & Pluto are interesting in this repect), the Uranus moons as senn from Uranus. Check back here later, I will post here the list of constellations the Uranus moons move in front of as seen from Uranus. It is just I am not at home now, so do not have the software on this computer, its at home. Charon from Pluto also. This is turning into a really interesting thread. Thank you for starting it RobAstor. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

robastor · Aug 16, 2007

Thanks for sharing. I will check back. I have RedShift 2 from years ago, the one that came with the bonus CD of music called RedShift Suite by Jean-Pierre Garatoni. I didn't know that program was still around. Is RedShift 5 MacOS X compatible and where can I find it? I really liked that program. Thanks again! Rob

nexium · Aug 16, 2007

Mercury rotates upright. Venus is upside down = about 178 degrees/ for most practical purposes figure 2 degrees tilt. IIRC = if I recall correctly the gas giants are about 10 degrees tilt except Uranus which is about 89 degrees. Perhaps the tilts I remember are with respect to the plane of Earth's orbit, instead of the plane of the planet's etc orbit. I'm quite sure Mercury is 9 degrees tilt with respect to Earth's orbit but zero degrees with respect to the plane of Mercury's orbit. Neil

MeteorWayne · Aug 16, 2007

Considering the clouds on Venus, I'm not sure a "Tropic of anything" is relevant <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Aug 16, 2007

Very true MeteorWayne, on Venus it is a very moot point. As promised, constellations that the major moons of Uranus: Puck, Miranda, Ariel, Umbriel, Titania & Oberon pass through as seen from Uranus, in correct order. 1). Leo. 2). Leo Minor. 3). Ursa Major. 4). Draco. 5). Camelopardalis. 6). Cepheus. 7). Lacerta. 8). Pegasus. 9). Aquarius. 10). Sculptor. 11). Pheonix. 12). Hydrus. 13). Mensa. 14). Volans. 15). Carina. 16). Vela. 17). Pyxis. 18). Hydra. 19). Sextans. & finally back to Leo. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

3488 · Aug 16, 2007

Constellations that Charon passes through as seen from Pluto & viceversa!!!! In correct order. 1). Libra. 2). Serpens Caput. 3). Bootes. 4). Draco. 5). Ursa Minor. 6). Cepheus. 7). Cassiopiea. 8). Perseus. 9). Andromeda. 10). Triangulum. 11). Aries. 12). Pisces. 13). Cetus. 14). Fornax. 15). Phoenix. 16). Tucana. 17). Octans. 18). Pavo. 19). Triangulum Australe. 20). Ara. 21). Norma. 22). Lupus. & finally back to Libra. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

3488 · Aug 16, 2007

Constellations that Triton passes through as seen from Neptune & viceversa!!!! In correct order. 1). Libra. 2). Virgo. 3). Bootes. 4). Canes Venatici. 5). Ursa Major. 6). Draco. 7). Camelopardalis. 8). Perseus. 9). Andromeda. 10). Triangulum. 11). Aries. 12). Pisces. 13). Cetus. 14). Fornax. 15). Phoenix. 16). Grus. 17). Indus. 18). Pavo. 19). Ara. 20). Scorpius. 21). Lupus. & finally back to Libra. Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

robastor · Aug 17, 2007

Thanks for all the effort! Rob

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