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Asteroid Near-Earth

140333

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140333 (2001 TD2)

Where is it now

Distance from Sun
0.908 AU
True anomaly
247.18°
Distance from Earth
1.104 AU
As of
22 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 140333 — 0.908 AU from the Sun 140333
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 140333 is 1.104 AU from Earth today (9.2 light-minutes).

In the sky

Right ascension
11h 16m 07s
Declination
+21° 32′ 58″
Constellation
Leo
Distance from Earth
1.1 AU
Elongation from the Sun
50.63° — near the Sun — look low at dusk or dawn

Favours the northern hemisphere; low or below the horizon from far south.

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
0.962 AU
Eccentricity
0.4816
Inclination
19.03°
Orbital period
344.6 days
Perihelion
0.499 AU
Aphelion
1.425 AU
Longitude of ascending node
12.8°
Argument of periapsis
199.11°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 71.8 LD
0.1846 AU
Tisserand (Jupiter)
6.122

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
763
Data arc
23.01 years
First observed
10 October 2001
Last observed
13 October 2024
Residual RMS
0.52 ″
Solution · Otto Matic
14 October 2024

Visual & observation

Absolute magnitude (H)
19.24

Discovery & classification

Discovered by
NEAT
Discovery date
10 October 2001
Discovery site
Palomar

Also known as 2001 TD2

Aten Near-Earth Object

Close approaches 209 on record

Flyby geometry
Ecliptic flyby of 140333 at 2033-09-18 22:38 UTC Top-down view of the ecliptic, Earth at the centre, for the 2033-09-18 22:38 UTC close approach of 140333. Catalogue miss distance 183.9 LD · 7.07 × 10⁷ km. The curve is the geocentric path from 2033-09-15 to 2033-09-21, 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 183.9 LD · 7.07 × 10⁷ km 2033-09-18 22:38 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2033-09-18 22:38 UTC close approach of 140333. Catalogue miss distance 183.9 LD · 7.07 × 10⁷ km. The curve is the geocentric path from 2033-09-15 to 2033-09-21, 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
2030-03-04 15:36:00 Mars 0.0895 AU 34.8 LD 10.1 km/s
2032-01-18 11:30:00 Mars 0.0739 AU 28.7 LD 10.2 km/s
2033-09-18 22:38:00 Earth 0.4724 AU 183.9 LD 28.9 km/s
2033-12-03 14:59:00 Mars 0.0617 AU 24.0 LD 10.4 km/s
2034-09-08 13:33:00 Earth 0.2175 AU 84.7 LD 19.2 km/s
2035-09-14 09:32:00 Earth 0.2545 AU 99.0 LD 13.5 km/s
2035-10-20 04:10:00 Mars 0.0558 AU 21.7 LD 10.6 km/s
2036-10-04 19:08:00 Earth 0.394 AU 153.3 LD 13.8 km/s
2037-09-04 21:02:00 Mars 0.0584 AU 22.7 LD 10.8 km/s
2037-10-25 12:30:00 Earth 0.4533 AU 176.4 LD 14 km/s

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

Sources