Epoch
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Planet Positions
| Planet | RA | Dec | Con. | Dist. (AU) | Ang. Size | Mag. |
|---|---|---|---|---|---|---|
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Sun
HMI Intensitygram β click for full res
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Moon
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Mercury
Venus
Mars β Surface Feature Transits
Next Central Meridian Transits
Next time each feature crosses Mars' central meridian. Accuracy ~4 min.
| Feature | Lon | Lat | Date | Time (local) | |
|---|---|---|---|---|---|
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Jupiter β Great Red Spot
Upcoming GRS Transits
Shown when Jupiter is above horizon and sky is darker than nautical twilight. Accuracy Β±10 min.
| Date | Time (local) | Jupiter Alt |
|---|---|---|
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Jupiter System
Label above: moon is behind the planet. Label below: moon is in front.
| Moon | X (Rβ / ") | Y (Rβ / ") | Z (Rβ) | Offset | Mag. |
|---|---|---|---|---|---|
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Jupiter β Galilean Satellite Phenomena
Upcoming Events
Shown when Jupiter is above the horizon at night. Times Β±5 min within ~60 mi of Adams, MA.
Filter:
| Date | Start (local) | End (local) | Dur. | Satellite | Event |
|---|---|---|---|---|---|
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Saturn System
Label above: moon is behind the planet. Label below: moon is in front.
| Moon | X (Rβ / ") | Y (Rβ / ") | Z (Rβ) | Offset | Mag |
|---|---|---|---|---|---|
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Comets
Positions interpolated to selected epoch from 30-day JPL Horizons ephemerides. Magnitudes are estimates β comet brightness can vary significantly from predictions.
| Comet | Mag. | RA | Dec | Const. | Elong. | Sky | Motion | Ephem. |
|---|---|---|---|---|---|---|---|---|
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Source: JPL Horizons · updated nightly · β