| Observing Location | McGraw Ave @ Virginia Ave, Bronx, NY |
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| Observational Period | 1730-1745 EST |
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| Atmospheric Conditions |
| Cloud Cover | Isolated |
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| Temperature | Mid-20s F |
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| Wind | Moderate Breeze |
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| Humidity | Moderate |
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| Feels Like | Cold
single digit Wind Chill |
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There were stripes of cloud blowing quickly across the sky. Out to the W where the clouds were backlit I could see precipitation falling from the bottom of some of the clouds.
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| Instruments | Naked-eye Observing |
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| Observing Party | Charlie Ridgway
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When I left the library I could see the Moon in the early twilight so decided to walk over to the Cross Bronx Expressway to try to find Mercury. I didn't have the Palm with me but know that Mercury is approaching greatest Eastern elongation and setting after sunset so I figured I might have a shot at it. A block from my normal location I could see Venus shining brightly, but it was above a stripe of cloud which is where Mercury should have been.
1709 EST - Sun sets, Civil Twilight begins
| Target | Moon |
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| Constellation | Aur |
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| Category | Lunar |
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Time
yyyymmdd.hhmm | 20070129.1735 EST |
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| Comments |
| Lunation | |
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| Phase | Waxing Gibbous |
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| Age | 10d18h29m |
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Distance
Light Time
(from earth) | 379,000 km
1.26S |
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| Elongation | 140.18°E |
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| % Illuminated | 88.4% |
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| Magnitude | -1.8 |
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| Angular Size | 31'37" |
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| Altitude | 41.06° |
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The Moon was at the junction of Aur, Gem and Tau but had officially just entered Aur from Gem.
One minute the Moon was in clear air and the best it was lighting up clouds around it.
I could make out a dark circle with some lighter gray splotches around it. That would have been Mare Crisium. |
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|
| Target | Venus |
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| Constellation | Aqr |
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| Category | Planet |
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Time
yyyymmdd.hhmm | 20070129.1735 EST |
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| Comments |
Object
Class | Classical Planet |
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| Phase | Waning Gibbous |
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| Elongation | 22.64°E |
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| % Illuminated | 92.6% |
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Distance
Light Time
(from Earth) | 1.53 AU
12m43s |
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Distance
(from Sun) | 0.726 Au |
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| Angular Size | 11" |
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| Magnitude | -3.9 |
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| Altitude | 14.26° |
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Venus was big and bright in a patch of clear air above a stripe of cloud. |
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|
| Target | Mercury |
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| Constellation | Cap |
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| Category | Planet |
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Time
yyyymmdd.hhmm | 20070129.1735 EST |
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| Comments |
Object
Class | Classical Planet |
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| Phase | Waning Gibbous |
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| Elongation | 15.02°E |
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| % Illuminated | 83.1% |
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Distance
Light Time
(from Earth) | 1.18 AU
9m47s |
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Distance
(from Sun) | 0.340 Au |
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| Angular Size | 5.71" |
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| Magnitude | -1.0 |
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| Altitude | 7.62° |
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Not Seen
It was behind a stripe of cloud. |
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|
1738 EST - Civil Twilight ends, Nautical Twilight begins
1811 EST - Nautical Twilight Ends, Astronomical Twilight negins
1843 EST - Astronomical Twilight ends
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