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Asteroid Near-Earth

2020 TJ1

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(2020 TJ1)

Where is it now

Distance from Sun
1.093 AU
True anomaly
193.97°
Distance from Earth
0.382 AU
As of
21 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 — 0.995 AU from the Sun Earth 2020 TJ1 — 1.093 AU from the Sun 2020 TJ1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2020 TJ1 is 0.382 AU from Earth today (3.2 light-minutes).

In the sky

Right ascension
20h 09m 36s
Declination
-07° 50′ 27″
Constellation
Aquila
Distance from Earth
0.38 AU
Elongation from the Sun
94.42° — well clear of the Sun

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
0.907 AU
Eccentricity
0.2144
Inclination
29.91°
Orbital period
315.7 days
Perihelion
0.713 AU
Aphelion
1.102 AU
Longitude of ascending node
195.64°
Argument of periapsis
337.67°
Epoch · J2000
2459131.5
Orbit class · ATE
Aten
Earth MOID · 30.9 LD
0.0794 AU
Tisserand (Jupiter)
6.442

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
35
Data arc
8 days
First observed
7 October 2020
Last observed
15 October 2020
Residual RMS
0.39 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
24.4

Discovery & classification

Aten Near-Earth Object

Close approaches 42 on record

Flyby geometry
Ecliptic flyby of 2020 TJ1 at 2027-03-13 11:56 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-03-13 11:56 UTC close approach of 2020 TJ1. Catalogue miss distance 131.7 LD · 5.06 × 10⁷ km. The curve is the geocentric path from 2027-03-10 to 2027-03-16, 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 south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 131.7 LD · 5.06 × 10⁷ km 2027-03-13 11:56 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-03-13 11:56 UTC close approach of 2020 TJ1. Catalogue miss distance 131.7 LD · 5.06 × 10⁷ km. The curve is the geocentric path from 2027-03-10 to 2027-03-16, 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 south 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
2026-10-02 02:54:00 Earth 0.3202 AU 124.6 LD 16.3 km/s
2027-03-13 11:56:00 Earth 0.3384 AU 131.7 LD 19.4 km/s
2027-10-10 13:57:00 Earth 0.4013 AU 156.2 LD 21 km/s
2028-12-13 20:24:00 Venus 0.0647 AU 25.2 LD 21.1 km/s
2033-04-10 12:19:00 Earth 0.2772 AU 107.9 LD 19.5 km/s
2033-10-11 21:45:00 Earth 0.1537 AU 59.8 LD 16.2 km/s
2039-05-09 17:19:00 Earth 0.3616 AU 140.7 LD 19.7 km/s
2039-10-08 09:03:00 Earth 0.1444 AU 56.2 LD 14.9 km/s
2045-09-29 22:12:00 Earth 0.3724 AU 144.9 LD 16.9 km/s
2046-10-11 10:08:00 Earth 0.3383 AU 131.7 LD 19.5 km/s

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

Sources