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Asteroid Near-Earth

2023 GT1

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(2023 GT1)

2023 GT1 is an asteroid in the Apollo orbit class. Its orbit takes it from 1.01 AU to 1.06 AU from the Sun; one orbit takes 383.3 days. Orbit from the JPL solution of 19 April 2023.

Where is it now

Distance from Sun
1.058 AU
True anomaly
164.8°
Distance from Earth
0.995 AU
As of
3 November 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Sun Earth — 0.992 AU from the Sun Earth 2023 GT1 — 1.058 AU from the Sun 2023 GT1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 GT1 is 0.995 AU from Earth today (8.3 light-minutes).

In the sky

Right ascension
19h 13m 35s
Declination
-25° 34′ 35″
Constellation
Sagittarius
Distance from Earth
1 AU
Elongation from the Sun
64.33° — well clear of the Sun

Favours the southern hemisphere; low or below the horizon from far north.

From your location

See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
1.033 AU
Eccentricity
0.0256
Inclination
4.75°
Orbital period
383.3 days
Perihelion
1.006 AU
Aphelion
1.059 AU
Longitude of ascending node
23.43°
Argument of periapsis
155.11°
Epoch · J2000
2461200.5
Orbit class · APO
Apollo
Earth MOID · 2.3 LD
0.006 AU
Tisserand (Jupiter)
5.927

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
42
Data arc
3 days
First observed
15 April 2023
Last observed
18 April 2023
Residual RMS
0.54 ″
Solution · Otto Matic
19 April 2023

Visual & observation

Absolute magnitude (H)
28.26

Discovery & classification

Apollo Near-Earth Object

Close approaches 37 on record

Flyby geometry
Ecliptic flyby of 2023 GT1 at 2043-04-04 14:52 UTC Sun 157.6 LD · 6.06 × 10⁷ km 2043-04-04 14:52 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2043-04-04 14:52 UTC close approach of 2023 GT1. Catalogue miss distance 157.6 LD · 6.06 × 10⁷ km. The curve is the geocentric path from 2043-04-01 to 2043-04-07, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2043-04-04 14:52:00 Earth 0.4049 AU 157.6 LD 12.3 km/s
2044-04-07 13:22:00 Earth 0.1001 AU 39.0 LD 4 km/s
2044-10-06 12:22:00 Earth 0.058 AU 22.6 LD 2.7 km/s
2045-05-02 02:07:00 Earth 0.1872 AU 72.9 LD 6 km/s
2046-06-04 07:27:00 Earth 0.4806 AU 187.0 LD 14.4 km/s
2065-04-06 13:04:00 Earth 0.3484 AU 135.6 LD 10.6 km/s
2066-04-10 03:54:00 Earth 0.051 AU 19.9 LD 3 km/s
2066-09-22 00:50:00 Earth 0.0645 AU 25.1 LD 2.7 km/s
2067-04-30 04:06:00 Earth 0.2157 AU 83.9 LD 6.8 km/s
2068-05-29 19:52:00 Earth 0.4879 AU 189.9 LD 14.6 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources