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Asteroid Near-Earth

2021 TQ1

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(2021 TQ1)

Where is it now

Distance from Sun
0.78 AU
True anomaly
4.55°
Distance from Earth
1.363 AU
As of
24 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 — 0.994 AU from the Sun Earth 2021 TQ1 — 0.78 AU from the Sun 2021 TQ1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2021 TQ1 is 1.363 AU from Earth today (11.3 light-minutes).

In the sky

Right ascension
11h 49m 37s
Declination
+00° 37′ 40″
Constellation
Virgo
Distance from Earth
1.36 AU
Elongation from the Sun
34.26° — 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
0.973 AU
Eccentricity
0.1989
Inclination
1.14°
Orbital period
350.4 days
Perihelion
0.779 AU
Aphelion
1.166 AU
Longitude of ascending node
176.17°
Argument of periapsis
310.3°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 2.8 LD
0.0071 AU
Tisserand (Jupiter)
6.197

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
15
Data arc
4 days
First observed
3 October 2021
Last observed
7 October 2021
Residual RMS
0.58 ″
Solution · Otto Matic
7 November 2022

Visual & observation

Absolute magnitude (H)
28.09

Discovery & classification

Aten Near-Earth Object

Close approaches 44 on record

Flyby geometry
Ecliptic flyby of 2021 TQ1 at 2041-05-31 14:23 UTC Top-down view of the ecliptic, Earth at the centre, for the 2041-05-31 14:23 UTC close approach of 2021 TQ1. Catalogue miss distance 117.5 LD · 4.52 × 10⁷ km. The curve is the geocentric path from 2041-05-28 to 2041-06-03, 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. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 117.5 LD · 4.52 × 10⁷ km 2041-05-31 14:23 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2041-05-31 14:23 UTC close approach of 2021 TQ1. Catalogue miss distance 117.5 LD · 4.52 × 10⁷ km. The curve is the geocentric path from 2041-05-28 to 2041-06-03, 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. 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
2039-04-11 00:15:00 Venus 0.0835 AU 32.5 LD 2.6 km/s
2041-05-31 14:23:00 Earth 0.302 AU 117.5 LD 14.4 km/s
2042-05-21 13:57:00 Earth 0.0537 AU 20.9 LD 6.9 km/s
2043-03-22 14:00:00 Earth 0.1653 AU 64.3 LD 4.8 km/s
2043-07-07 11:53:00 Earth 0.1389 AU 54.0 LD 4.4 km/s
2044-01-25 19:52:00 Earth 0.2046 AU 79.6 LD 6.7 km/s
2044-09-06 17:12:00 Earth 0.121 AU 47.1 LD 4.1 km/s
2044-11-24 12:49:00 Earth 0.1441 AU 56.1 LD 3.9 km/s
2045-10-08 19:37:00 Earth 0.097 AU 37.8 LD 8.3 km/s
2046-09-28 11:25:00 Earth 0.3451 AU 134.3 LD 15.8 km/s

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

Sources