Mercury and Mars

Tonight and tomorrow the pair of planets, Mercury and Mars will be about 30′ apart, close enough to easily fit in the low power view of most small telescopes. The pair will be 13° above the sunset, setting about an hour after the Sun slides below the horizon.

After the 8th the pair will separate, with Mercury heading for maximum elongation on February 16th.

Mercury and Mars

For the next few evenings Mercury and Mars will pair in the sunset for a dance. Tonight the two are 3°13′ apart, with Mercury rising rapidly. Tomorrow the two will be only 2°17′ apart. On the 7th and 8th there will be about 30′ between the two. After the 8th the two will gradually draw apart. On the 10th the separation will be just over 2° with the addition of a 1.8% illuminated Moon just 7° lower and north of the pair.

The pair should be easy to spot. Mercury will be shining brightly at -1 magnitude with Mars at about 1.2 magnitude. A pair of binoculars might help spot the dimmer Mars.

Neptune is also in this dance, but at 8th magnitude it could be very difficult or impossible to spot, even with optical aid. On the 5th, with Mercury and Mars only 2&deg apart, Neptune will be right between the two.

Mars and Neptune

Tonight and tomorrow night Mars and Neptune will be under a degree apart. But, as the pair is quite low in the sky, this may not be observable. The planets will be 40′ apart tonight, a little closer tomorrow at only 27′ separation. The pair will be 14° above the horizon at sunset. Mars, shining a 1.2 magnitude should be relatively easy to spot. The 8th magnitude Neptune may be too dim to see, even with a telescope, against the bright glow of sunset.

On the evening of February 5th, Mercury will join in to create a trio, just 2° below Mars with Neptune between the two.

The Moon and Jupiter

This evening sky-watchers will note Jupiter directly beside a bright Moon. The pair will be very close separated by only 1°09′ as of sunset here in Hawai’i. Accounting for the radius of the Moon this will mean that the planet will be only 55′ off the limb of the Moon.

Observers further east and south will be able to see an occultation, with the Moon passing in front of Jupiter. Here in Hawai’i the occultation will be over before sunset. It is no use observing during the daytime either, as the planet will pass north of the Moon for our latitude.

The proximity of the two does provide a nice opportunity to see Jupiter in the daytime, as the Moon will provide a signpost to the location of the planet. The pair will rise about 14:00HST and be well up before sunset. Look just to the north of the Moon (left as they rise) for a pinpoint of light. At -2.6 magnitude the planet should be easy to spot as long as the sky is clear and not hazy.

The Moon and Venus

Tomorrow morning will find a razor thin crescent Moon about 5° from a brilliant Venus just above the rising Sun. The Moon will rise about 05:50HST, with Venus already in the sky. With sunrise at 06:59HST the pair should rise about 13° above the sunrise. This is enough to allow the the Moon, only 1.9% illuminated to be spotted fairly easily given a clear eastern horizon.

The Moon, Mercury and Venus

Tomorrow morning, December 11th, a nice trio will see three bright objects create a close 6° triangle. Lowest of the three will be Mercury, shining brightly at -0.6 magnitude, at about 18° elevation at sunrise. About 4° above Mercury will be a nice 4% illuminated crescent Moon. Above the Moon will be Venus, shining at -3.9 magnitude it will be very hard to miss. About 16° above the trio you can find Saturn, making three bright planets in the dawn. This conjunction should be worth setting the alarm clock early for.

A Line of Planets in the Dawn

Tomorrow morning, December 10th, you will find a nice lineup of planets in the dawn sky. Mercury, Venus and Saturn will be in a line about 20° long. Adding to the lineup will be a nice crescent Moon, a bit over 10° higher in the sky than Saturn.

The view at 06:00HST will find a 19% illuminated Moon at 38° elevation. Working down the line you will see Saturn at 29° elevation, Venus at 15° elevation and Mercury at 9° elevation. With sunrise not until 06:46HST this will give plenty of time to view, and perhaps photograph, a line of planets in the dawn.

Over the next few days the view will be much the same, with the Moon lower each morning. On December 11th the Moon will sit between Venus and Mercury creating a nice trio.

Venus and Saturn

Tomorrow morning, November 26th, will see a very close rendezvous of Venus and Saturn in the dawn. The two will be less than a degree apart, with a separation of only 40 arc-minutes. This will put both planets in the same low power telescopic view. The pair will rise about 04:30HST and be well up, nearly 30° above the horizon, at sunrise.

This is a mismatched pair, with Venus dominating the view at a brilliant -4.0 magnitude. Saturn will be far dimmer at 0.6 magnitude.