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Asteroid Near-Earth

679648

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679648 (2019 XS)

679648 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.68 AU to 1.33 AU from the Sun; one orbit takes 368.6 days. Discovered 2 December 2019 by Mount Lemmon Survey. Orbit from the JPL solution of 16 December 2024.

Where is it now

Distance from Sun
0.865 AU
True anomaly
83.22°
Distance from Earth
0.318 AU
As of
3 November 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 — 0.992 AU from the Sun Earth 679648 — 0.865 AU from the Sun 679648
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 679648 is 0.318 AU from Earth today (2.6 light-minutes).

In the sky

Right ascension
18h 41m 35s
Declination
-28° 26′ 46″
Constellation
Sagittarius
Distance from Earth
0.32 AU
Elongation from the Sun
57.92° — near the Sun — look low at dusk or dawn

Favours the southern hemisphere; low or below the horizon from far north.

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
1.006 AU
Eccentricity
0.3264
Inclination
4.45°
Orbital period
368.6 days
Perihelion
0.678 AU
Aphelion
1.334 AU
Longitude of ascending node
49.45°
Argument of periapsis
250.55°
Epoch · J2000
2461200.5
Orbit class · APO
Apollo
Earth MOID · 1.4 LD
0.0037 AU
Tisserand (Jupiter)
6.001

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
137
Data arc
23.68 years
First observed
4 April 2000
Last observed
8 December 2023
Residual RMS
0.39 ″
Solution · Davide Farnocchia
16 December 2024

Physical properties

Rotation period
2.35 hours

Visual & observation

Absolute magnitude (H)
23.85

Discovery & classification

Discovered by
Mount Lemmon Survey
Discovery date
2 December 2019
Discovery site
Mount Lemmon

Also known as 2019 XS

Apollo Near-Earth Object

Close approaches 72 on record

When (UTC) Body Distance Lunar distances Relative speed
2029-09-27 18:46:00 Venus 0.0545 AU 21.2 LD 6.9 km/s
2040-11-27 19:51:00 Venus 0.1073 AU 41.7 LD 13.6 km/s
2043-10-18 08:42:00 Venus 0.0401 AU 15.6 LD 9.8 km/s
2054-12-04 15:33:00 Venus 0.0511 AU 19.9 LD 6.9 km/s
2066-01-31 00:06:00 Venus 0.0337 AU 13.1 LD 7.1 km/s
2077-03-02 10:15:00 Venus 0.0225 AU 8.8 LD 7.5 km/s
2088-02-27 06:34:00 Venus 0.0542 AU 21.1 LD 6.9 km/s
2099-03-07 18:49:00 Venus 0.0293 AU 11.4 LD 7.7 km/s
2110-04-03 10:47:00 Venus 0.0276 AU 10.7 LD 7.9 km/s
2121-05-05 17:27:00 Venus 0.0385 AU 15.0 LD 7.1 km/s

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

Sources