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Asteroid Near-Earth

436771

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436771 (2012 JG11)

Where is it now

Distance from Sun
1.373 AU
True anomaly
174.14°
Distance from Earth
2.105 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 436771 — 1.373 AU from the Sun 436771
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 436771 is 2.105 AU from Earth today (17.5 light-minutes).

In the sky

Right ascension
15h 59m 19s
Declination
-04° 27′ 47″
Constellation
Libra
Distance from Earth
2.11 AU
Elongation from the Sun
32.21° — 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
0.962 AU
Eccentricity
0.4324
Inclination
24.73°
Orbital period
344.7 days
Perihelion
0.546 AU
Aphelion
1.378 AU
Longitude of ascending node
165.52°
Argument of periapsis
280.4°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 43.8 LD
0.1125 AU
Tisserand (Jupiter)
6.113

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
176
Data arc
7.13 years
First observed
12 May 2012
Last observed
29 June 2019
Residual RMS
0.48 ″
Solution · Otto Matic
1 March 2023

Visual & observation

Absolute magnitude (H)
19.03

Discovery & classification

Discovered by
Mt. Lemmon Survey
Discovery date
12 May 2012
Discovery site
Mount Lemmon

Also known as 2012 JG11

Aten Near-Earth Object

Close approaches 158 on record

Flyby geometry
Ecliptic flyby of 436771 at 2030-04-13 04:39 UTC Top-down view of the ecliptic, Earth at the centre, for the 2030-04-13 04:39 UTC close approach of 436771. Catalogue miss distance 128.8 LD · 4.95 × 10⁷ km. The curve is the geocentric path from 2030-04-10 to 2030-04-16, 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 north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 128.8 LD · 4.95 × 10⁷ km 2030-04-13 04:39 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2030-04-13 04:39 UTC close approach of 436771. Catalogue miss distance 128.8 LD · 4.95 × 10⁷ km. The curve is the geocentric path from 2030-04-10 to 2030-04-16, 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 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
2030-04-13 04:39:00 Earth 0.331 AU 128.8 LD 24.3 km/s
2031-03-20 18:05:00 Earth 0.2113 AU 82.2 LD 17.5 km/s
2032-02-10 11:26:00 Earth 0.3946 AU 153.6 LD 17 km/s
2034-09-14 18:34:00 Earth 0.279 AU 108.6 LD 13.7 km/s
2034-10-04 00:38:00 Venus 0.0537 AU 20.9 LD 19.9 km/s
2035-08-24 18:58:00 Earth 0.1375 AU 53.5 LD 19.7 km/s
2036-08-07 02:39:00 Earth 0.4227 AU 164.5 LD 28.3 km/s
2038-09-25 14:10:00 Venus 0.0374 AU 14.6 LD 20.4 km/s
2047-04-07 07:50:00 Earth 0.2622 AU 102.0 LD 21.9 km/s
2048-03-10 11:22:00 Earth 0.2535 AU 98.6 LD 16.6 km/s

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

Sources