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Asteroid 192 Nausikaa at opposition

Dominic Ford, Editor
From the Asteroids feed

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The sky at

Asteroid 192 Nausikaa will be well placed for observation, lying in the constellation Auriga, well above the horizon for much of the night.

Regardless of your location on the Earth, 192 Nausikaa will reach its highest point in the sky around midnight local time.

From Fairfield, it will be visible in the evening sky, becoming accessible around 17:32 (EDT) as the dusk sky fades, 22° above your north-eastern horizon. It will then reach its highest point in the sky at 23:35, 84° above your southern horizon. It will continue to be observable until around 05:44, when it sinks below 22° above your north-western horizon.

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The geometry of the alignment

This optimal positioning occurs when it makes its closest approach to the point in the sky directly opposite to the Sun – an event termed opposition. Since the Sun reaches its greatest distance below the horizon at midnight, the point opposite to it is highest in the sky at the same time.

At around the same time that 192 Nausikaa passes opposition, it also makes its closest approach to the Earth – termed its perigee – making it appear at its brightest in the night sky. This happens because when 192 Nausikaa lies opposite to the Sun in the night sky, the solar system is lined up so that 192 Nausikaa, the Earth and the Sun lie in a straight line with the Earth in the middle, on the same side of the Sun as 192 Nausikaa.

On this occasion, 192 Nausikaa will pass within 1.074 AU of us, reaching a peak brightness of magnitude 9.5. Nonetheless, even at its brightest, 192 Nausikaa is a faint object beyond the reach of the naked eye; binoculars or a telescope of moderate aperture are needed.

Finding 192 Nausikaa

The chart below indicates the path of 192 Nausikaa across the sky around the time of opposition.

It was produced using StarCharter and is available for download, either on dark background, in PNG, PDF or SVG formats, or on a light background, in PNG, PDF or SVG formats.

The position of 192 Nausikaa at the moment of opposition will be as follows:

Object Right Ascension Declination Constellation Magnitude
Asteroid 192 Nausikaa 05h07m00s +35°54' Auriga 9.5

The coordinates above are given in J2000.0.

The sky on 02 April 2020
Sunrise
06:34
Sunset
19:19
Twilight ends
20:54
Twilight begins
04:59

9-day old moon
Waxing Gibbous

65%

9 days old

Planets
Rise Culm. Set
Mercury 05:47 11:24 17:02
Venus 08:18 15:51 23:23
Moon 13:05 20:31 03:08
Mars 03:39 08:25 13:11
Jupiter 03:10 07:53 12:37
Saturn 03:31 08:19 13:08
All times shown in EDT.

Source

The circumstances of this event were computed from orbital elements made available by Ted Bowell of the Lowell Observatory. The conversion to geocentric coordinates was performed using the position of the Earth recorded in the DE405 ephemeris published by the Jet Propulsion Laboratory (JPL).

The star chart above shows the positions and magnitudes of stars as they appear in the Tycho catalogue. The data was reduced by the author and plotted using PyXPlot. A gnomonic projection of the sky has been used; celestial coordinates are indicated in the J2000.0 coordinate system.

Image credit

None available.

Fairfield

Latitude:
Longitude:
Timezone:

41.14°N
73.26°W
EDT

Color scheme