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Asteroid Near-Earth

2023 HT3

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(2023 HT3)

Where is it now

Distance from Sun
0.679 AU
True anomaly
77.91°
Distance from Earth
1.365 AU
As of
16 October 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 — 0.997 AU from the Sun Earth 2023 HT3 — 0.679 AU from the Sun 2023 HT3
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 HT3 is 1.365 AU from Earth today (11.4 light-minutes).

In the sky

Right ascension
12h 14m 43s
Declination
+11° 48′ 25″
Constellation
Virgo
Distance from Earth
1.37 AU
Elongation from the Sun
28.17° — near the Sun — look low at dusk or dawn

Visible from both hemispheres.

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
0.814 AU
Eccentricity
0.3301
Inclination
25.73°
Orbital period
268.4 days
Perihelion
0.546 AU
Aphelion
1.083 AU
Longitude of ascending node
33.58°
Argument of periapsis
20.56°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 16.3 LD
0.0418 AU
Tisserand (Jupiter)
7.062

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
78
Data arc
18 days
First observed
22 April 2023
Last observed
10 May 2023
Residual RMS
0.42 ″
Solution · Otto Matic
10 May 2023

Physical properties

Rotation period
0.08 hours

Visual & observation

Absolute magnitude (H)
24.05

Discovery & classification

Aten Near-Earth Object

Close approaches 178 on record

Flyby geometry
Ecliptic flyby of 2023 HT3 at 2028-11-30 17:37 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-11-30 17:37 UTC close approach of 2023 HT3. Catalogue miss distance 185.2 LD · 7.12 × 10⁷ km. The curve is the geocentric path from 2028-11-27 to 2028-12-03, 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. At closest approach the object is north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 185.2 LD · 7.12 × 10⁷ km 2028-11-30 17:37 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-11-30 17:37 UTC close approach of 2023 HT3. Catalogue miss distance 185.2 LD · 7.12 × 10⁷ km. The curve is the geocentric path from 2028-11-27 to 2028-12-03, 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. At closest approach the object is north of the ecliptic. 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
2028-11-30 17:37:00 Earth 0.4758 AU 185.2 LD 21.9 km/s
2031-04-27 22:27:00 Earth 0.4693 AU 182.6 LD 24.3 km/s
2031-10-28 00:58:00 Earth 0.4389 AU 170.8 LD 22.9 km/s
2034-04-20 15:34:00 Earth 0.1452 AU 56.5 LD 15.8 km/s
2034-09-22 17:11:00 Earth 0.4392 AU 170.9 LD 20.1 km/s
2037-04-29 10:07:00 Earth 0.1601 AU 62.3 LD 13.2 km/s
2039-12-16 02:42:00 Earth 0.492 AU 191.5 LD 20 km/s
2040-05-16 17:31:00 Earth 0.4098 AU 159.5 LD 17 km/s
2042-11-10 01:34:00 Earth 0.4503 AU 175.3 LD 23 km/s
2045-04-21 22:14:00 Earth 0.2692 AU 104.8 LD 18.7 km/s

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

Sources