© NASA/Dawn 2015

1 Ceres at solar conjunction

Dominic Ford, Editor
From the Dwarf Planets feed

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The sky at

1 Ceres will pass very close to the Sun in the sky as its orbit carries it around the far side of the solar system from the Earth.

At closest approach, 1 Ceres will appear at a separation of only 7° from the Sun, making it totally unobservable for several weeks while it is lost in the Sun's glare.

At around the same time, 1 Ceres will also be at its most distant from the Earth – receding to a distance of 3.59 AU – since the two planets will lie on opposite sides of the solar system.

If 1 Ceres could be observed at this time, it would appear at its smallest and faintest on account of its large distance. It would measure 0.0 arcsec in diameter.

Over following weeks and months, 1 Ceres will re-emerge to the west of the Sun, gradually becoming visible for ever-longer periods in the pre-dawn sky. After around six months, it will reach opposition, when it will be visible for virtually the whole night. A chart of the path of 1 Ceres across the sky in 2018 can be found here, and a chart of its rising and setting times here.

The position of 1 Ceres at the moment it passes solar conjunction will be:

Object Right Ascension Declination Constellation Angular Size
1 Ceres 13h02m30s +00°56' Virgo 0.0"
Sun 12h51m -05°32' Virgo 32'00"

The coordinates above are given in J2000.0.

The sky on 07 October 2018
Sunrise
07:10
Sunset
18:43
Twilight ends
20:11
Twilight begins
05:41

28-day old moon
Waning Crescent

3%

28 days old

Planets
Rise Culm. Set
Mercury 08:11 13:41 19:10
Venus 09:39 14:27 19:14
Moon 05:26 11:49 18:12
Mars 16:02 20:51 01:42
Jupiter 10:25 15:28 20:30
Saturn 13:33 18:17 23:01
All times shown in EDT.

Warning

Never attempt to point a pair of binoculars or a telescope at an object close to the Sun. Doing so may result in immediate and permanent blindness.

Source

The circumstances of this event were computed using the DE405 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).

This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.

Related news

22 Apr 2018, 09:39 EDT  –  1 Ceres at perihelion
28 May 2019, 21:27 EDT  –  1 Ceres at opposition
28 Aug 2020, 10:53 EDT  –  1 Ceres at opposition
27 Nov 2021, 08:22 EST  –  1 Ceres at opposition

Image credit

© NASA/Dawn 2015

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EST

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