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Asteroid Near-Earth

368184

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368184 (2000 RN77)

Where is it now

Distance from Sun
1.126 AU
True anomaly
220.89°
Distance from Earth
0.323 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 368184 — 1.126 AU from the Sun 368184
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 368184 is 0.323 AU from Earth today (2.7 light-minutes).

In the sky

Right ascension
20h 32m 09s
Declination
+53° 17′ 46″
Constellation
Cygnus
Distance from Earth
0.32 AU
Elongation from the Sun
105.28° — well clear of the Sun

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
0.951 AU
Eccentricity
0.3182
Inclination
16.1°
Orbital period
338.9 days
Perihelion
0.649 AU
Aphelion
1.254 AU
Longitude of ascending node
312.68°
Argument of periapsis
211.75°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 41.8 LD
0.1074 AU
Tisserand (Jupiter)
6.249

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
517
Data arc
26.06 years
First observed
8 September 2000
Last observed
1 October 2026
Residual RMS
0.37 ″
Solution · Otto Matic
2 October 2026

Physical properties

Mean radius
0.19 km

Visual & observation

Geometric albedo
0.193
Absolute magnitude (H)
19.36

Discovery & classification

Discovered by
LINEAR
Discovery date
8 September 2000
Discovery site
Socorro

Also known as 2000 RN77

Aten Near-Earth Object

Close approaches 52 on record

Flyby geometry
Ecliptic flyby of 368184 at 2037-07-18 08:20 UTC Top-down view of the ecliptic, Earth at the centre, for the 2037-07-18 08:20 UTC close approach of 368184. Catalogue miss distance 45.1 LD · 1.73 × 10⁷ km. The curve is the geocentric path from 2037-07-15 to 2037-07-21, 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 45.1 LD · 1.73 × 10⁷ km 2037-07-18 08:20 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2037-07-18 08:20 UTC close approach of 368184. Catalogue miss distance 45.1 LD · 1.73 × 10⁷ km. The curve is the geocentric path from 2037-07-15 to 2037-07-21, 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
2037-07-18 08:20:00 Earth 0.1159 AU 45.1 LD 12.3 km/s
2050-07-18 23:14:00 Earth 0.1103 AU 42.9 LD 11.9 km/s
2063-07-19 22:33:00 Earth 0.1069 AU 41.6 LD 11.5 km/s
2065-01-30 21:36:00 Venus 0.1332 AU 51.8 LD 18.5 km/s
2066-12-10 08:36:00 Venus 0.0653 AU 25.4 LD 16.1 km/s
2068-10-19 01:13:00 Venus 0.0256 AU 9.9 LD 14.4 km/s
2070-08-29 20:24:00 Venus 0.0686 AU 26.7 LD 13.3 km/s
2072-07-11 22:34:00 Venus 0.1284 AU 50.0 LD 13 km/s
2076-07-23 05:07:00 Earth 0.1273 AU 49.5 LD 10.4 km/s
2089-07-26 07:36:00 Earth 0.1466 AU 57.0 LD 10.1 km/s

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

Sources