Distant Uranus is seen with its 4 brightest moons - from top to bottom: Oberon, Titania, Umbriel, and (below Uranus) Ariel. Because Uranus is about 1500 times brighter than the moons, a different brightness factor is used at the center of the image to show Uranus. | Uranus Details: | | Night of: | Friday December 15, 2017 | Site: | Laguna Niguel | Local Time: | 6:54 PM | Dec 15, 2017 | Altitude: | 63° | | Distance: | 1,801,880,000 miles | Magnitude: | +5.75 mV | Diameter: | 3.64 arcsec | Tilt: | +37.8° NP | Phase Angle: | 2.43° | Illumination: | 99.96% |
| | Camera Settings: | | Telescope: | 9.25-SCT | Camera: | ZWO ASI224 + 2x | f/ratio: | f/20 | Pixel Scale: | 0.163 arcsec | Gain: | 300 | Exposure: | 0.275 sec | Video Length: | ? | Frames: | | Stacked: | 1500 |
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