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6th February 2020, 07:58 PM | #1 |
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Is Uranus sometimes as bright as Venus?
Ok, I expect to see some creative parody titles...
Anyway, I was outside this evening and I noticed a really bright light in the sky. Initially I thought it was a helicopter or plane approaching the airport some distance away. But it didn’t move. Pulled out Night Sky and saw that it is, apparently Uranus. It looks brighter than I think it should, brighter than Venus has ever appeared to my eye. So my stupid novice question is: is this normal? Here is a pic of the Night Sky screen facing that way and a pic of the light. |
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6th February 2020, 08:14 PM | #2 |
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No way is it Uranus. I'd bet Venus. It's darned bright right now. It's even visible well before sunset if you know where to look. It alternates between setting after sunset or rising after sunrise. Typically the brightest planet in the sky.
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6th February 2020, 08:21 PM | #3 |
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6th February 2020, 08:30 PM | #4 |
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It's off because relativity finally failed.
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6th February 2020, 10:50 PM | #5 |
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Sirius.
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7th February 2020, 12:51 AM | #6 |
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[Airplane Mode] Surely, it can't be Sirius. [/Airplane Mode]
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7th February 2020, 03:59 AM | #7 |
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Unless you're in a very dark place (i.e. way, way out in the middle of nowhere) you won't be seeing Uranus at all without optical aids!
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7th February 2020, 04:13 AM | #8 |
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Well the sun shines out of it so I would say much brighter.
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7th February 2020, 04:38 AM | #9 |
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They're both in the south west (Venus more west and Uranus more south), so I would blame your app or phone's compass. They're not exactly next to each other (and Uranus is no way eyeball visible), but in the same vague direction at sunset (well, where I am).
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7th February 2020, 07:24 AM | #10 |
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Uranus can't be seen with the naked eye. That's why the pre-telescope ancients only knew about five other planets.
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7th February 2020, 07:33 AM | #11 |
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7th February 2020, 07:34 AM | #12 |
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7th February 2020, 07:43 AM | #13 |
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7th February 2020, 07:51 AM | #14 |
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What Wollery said, and almost what TragicMonkey said. Uranus is so close to the limit of naked eye visibility that no one had ever recognized it prior to it's discovery via telescope. You need ideal eyes, conditions, and knowledge of where it is to have a chance of seeing it naked eye.
ETA: Oh, and it moves so slowly across the sky that it's hard to prove you actually have seen it. But having said that all that, now is a good time for you to be looking for it. |
7th February 2020, 07:56 AM | #15 |
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Thanks all.
It’s only been recently that I started spending time outside looking at the stars as a form of meditation/relaxation. I had never seen Venus so bright. And now I know that maybe my phone isn’t the most reliable instrument for star gazing. Maybe it’s time to invest in better equipment. Any recommendations? |
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7th February 2020, 08:02 AM | #16 |
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I'm delighted to see a genuinely curious question as an OP, that has also provided some initial research.
It did get me thinking as to the relative orbits of all three planets and what would be the optimal spot to see Uranus and Venus at the same time (given of course that Uranus was bright enough to see from here at that distance.) |
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7th February 2020, 08:07 AM | #17 |
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Late October later this year will be when Uranus is at opposition, IOW visible at the nearly darkest time of night.
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7th February 2020, 08:17 AM | #18 |
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7th February 2020, 08:20 AM | #19 |
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7th February 2020, 08:27 AM | #20 |
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I don't think there's anything wrong with your equipment. The night sky apps tend to show you a very wide angle view of the sky, so at first you are likely to misjudge where in the sky things should be. Especially if you are viewing on a small screen.
Your photo is taken with a camera with a much narrower field of view, so the distance between the horizon and Venus appears relatively greater than it does in the app. Your app may allow you to zoom in a little on the sky and therefore give you a view which better matches your perception of the real sky. |
7th February 2020, 09:09 AM | #21 |
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7th February 2020, 09:25 AM | #22 |
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7th February 2020, 10:42 AM | #23 |
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Not so. They simply would not have noticed it as it so dim and moves so slowly among the stars.
This is not very surprising, since it is between 30 and 240 times dimmer (and moves among the stars three times more slowly) than the next brightest planet, Saturn. Yes this. Uranus at its brightest (mag 5.38) is visible to the naked eye, under ideal viewing conditions, for someone with very good eyesight. I have seen it once in the near perfect seeing at Stavely in Canterbury back in the 1980s and that was after I had first found it in a Dobsonian telescope, worked out some nearby stars as reference points, so I knew exactly where to look. For reference in the OP, Uranus will never be close to Venus at its dimmest (-2.98). My back of the envelope calculation makes Uranus at best case, just over 2,000 times dimmer than Venus. Interestingly, the minor planet Vesta is also sometimes visible to the naked eye (mag 5.2) |
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7th February 2020, 11:39 AM | #24 |
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I’m really thinking of driving out to one of the many dark places nearby that Night Sky helpfully points out. I have binoculars (why didn’t I think to pull them out yesterday?). I don’t think a telescope would show me much here besides the really bright stuff but out there...I’m prepared to be awed.
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7th February 2020, 11:53 AM | #25 |
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7th February 2020, 12:45 PM | #26 |
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Yeah. First time I heard this was possibly unintentional. Was listing to a TV program decades ago, maybe "What's My Line," and as a lead in to the next segment the host said: "stay tuned as we find out if there are rings around Uranus." Said completely straight faced. After the commercial break the program continued and the contestants, as well as the host, were struggling not to crack up.
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7th February 2020, 01:48 PM | #27 |
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That's why the "Uhr-Uh-Nus" pronunciation got started.
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7th February 2020, 03:48 PM | #28 |
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7th February 2020, 04:04 PM | #29 |
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10th February 2020, 07:32 AM | #30 |
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The first time I heard a Uranus joke, I was probably all of five years old.
Tyler: Where's he from? Uranus. Get it. Your anus? Greg: He doesn't get it Ty. Tyler: Get it? Your anus? Greg: He doesn't get it. Elliot: You're so immature! Greg: And you're such a sinus supremus. Elliott: Zero charisma! I'll be 40 in a month and I still have no ***** clue what a sinus supremus is, btw. |
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10th February 2020, 11:00 AM | #31 |
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10th February 2020, 01:09 PM | #32 |
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10th February 2020, 01:33 PM | #33 |
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"As long as it is admitted that the law may be diverted from its true purpose -- that it may violate property instead of protecting it -- then everyone will want to participate in making the law, either to protect himself against plunder or to use it for plunder. Political questions will always be prejudicial, dominant, and all-absorbing. There will be fighting at the door of the Legislative Palace, and the struggle within will be no less furious." - Bastiat, The Law |
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10th February 2020, 03:31 PM | #34 |
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If you're not a scientist but you think you've destroyed the foundation of a vast scientific edifice with 10 minutes of Googling, you might want to consider the possibility that you're wrong. Its TRE45ON season... convict the F45CIST!! |
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10th February 2020, 04:14 PM | #35 |
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10th February 2020, 05:14 PM | #36 |
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"As long as it is admitted that the law may be diverted from its true purpose -- that it may violate property instead of protecting it -- then everyone will want to participate in making the law, either to protect himself against plunder or to use it for plunder. Political questions will always be prejudicial, dominant, and all-absorbing. There will be fighting at the door of the Legislative Palace, and the struggle within will be no less furious." - Bastiat, The Law |
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12th February 2020, 10:52 AM | #37 |
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12th February 2020, 07:10 PM | #38 |
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Interestingly, the sea is as much green as it is blue (sea green is actually a colour), so Neptune would have been a good name for the seventh planet, and when the eighth planet was discovered, they would need a name for it, and since it was blue (sky-blue is a colour) they could have named it after the God of the Sky.... and the God of the Sky is.......
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12th February 2020, 07:51 PM | #39 |
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13th February 2020, 01:28 AM | #40 |
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