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Asteroid Near-Earth

791223

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791223 (2019 SV4)

Where is it now

Distance from Sun
1.582 AU
True anomaly
187.25°
Distance from Earth
0.778 AU
As of
24 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 — 0.994 AU from the Sun Earth 791223 — 1.582 AU from the Sun 791223
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 791223 is 0.778 AU from Earth today (6.5 light-minutes).

In the sky

Right ascension
05h 38m 46s
Declination
+13° 01′ 41″
Constellation
Orion
Distance from Earth
0.78 AU
Elongation from the Sun
126.11° — 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
0.971 AU
Eccentricity
0.6539
Inclination
12.08°
Orbital period
349.3 days
Perihelion
0.336 AU
Aphelion
1.605 AU
Longitude of ascending node
210.04°
Argument of periapsis
17.51°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 39.8 LD
0.1021 AU
Tisserand (Jupiter)
5.999

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
229
Data arc
7.05 years
First observed
8 November 2018
Last observed
27 November 2025
Residual RMS
0.48 ″
Solution · Otto Matic
28 November 2025

Visual & observation

Absolute magnitude (H)
21.2

Discovery & classification

Discovered by
ATLAS
Discovery date
26 September 2019
Discovery site
Haleakala

Also known as 2019 SV4

Aten Near-Earth Object

Close approaches 95 on record

Flyby geometry
Ecliptic flyby of 791223 at 2028-12-27 10:01 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-12-27 10:01 UTC close approach of 791223. Catalogue miss distance 73.7 LD · 2.83 × 10⁷ km. The curve is the geocentric path from 2028-12-24 to 2028-12-30, 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 25 Dec 29 Dec 73.7 LD · 2.83 × 10⁷ km 2028-12-27 10:01 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-12-27 10:01 UTC close approach of 791223. Catalogue miss distance 73.7 LD · 2.83 × 10⁷ km. The curve is the geocentric path from 2028-12-24 to 2028-12-30, 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
2028-12-27 10:01:00 Earth 0.1893 AU 73.7 LD 20.5 km/s
2031-12-30 06:53:00 Mercury 0.0976 AU 38.0 LD 30.6 km/s
2031-12-30 06:53:00 Merc 0.0976 AU 38.0 LD 30.6 km/s
2032-12-11 08:46:00 Merc 0.0722 AU 28.1 LD 31.6 km/s
2032-12-11 08:46:00 Mercury 0.0722 AU 28.1 LD 31.6 km/s
2033-11-24 11:40:00 Mercury 0.074 AU 28.8 LD 36.3 km/s
2033-11-24 11:40:00 Merc 0.074 AU 28.8 LD 36.3 km/s
2040-09-30 19:04:00 Earth 0.1994 AU 77.6 LD 26.6 km/s
2041-09-23 19:40:00 Earth 0.1274 AU 49.6 LD 19.2 km/s
2050-12-27 22:39:00 Earth 0.189 AU 73.6 LD 20.7 km/s

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

Sources