Asteroid Near-Earth

790911

790911 (2019 BO1)

790911 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.72 AU to 1.34 AU from the Sun; one orbit takes 380.1 days. Discovered 23 January 2019 by Pan-STARRS 2. Orbit from the JPL solution of 17 January 2026.

Where is it now

Distance from Sun: 0.924 AU
True anomaly: 88.11°
Distance from Earth: 0.658 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.

Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 790911 is 0.658 AU from Earth today (5.5 light-minutes).

In the sky

Right ascension: 19h 11m 37s
Declination: -53° 49′ 08″
Constellation: Telescopium
Distance from Earth: 0.66 AU
Elongation from the Sun: 64.83° — well clear of the Sun

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.

Paste a location

How do I find my coordinates?

Google Maps on a computer

Right-click the spot where you'll be observing.
The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
Paste them above.

Google Maps on a phone

Press and hold the spot to drop a pin.
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: 1.027 AU
Eccentricity: 0.3024
Inclination: 22.35°
Orbital period: 380.1 days
Perihelion: 0.716 AU
Aphelion: 1.338 AU
Longitude of ascending node: 80.63°
Argument of periapsis: 196.91°
Epoch · J2000: 2461200.5
Orbit class · APO: Apollo
Earth MOID · 107.9 LD: 0.2773 AU
Tisserand (Jupiter): 5.85

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used: 541
Data arc: 6.98 years
First observed: 23 January 2019
Last observed: 16 January 2026
Residual RMS: 0.46 ″
Solution · Otto Matic: 17 January 2026

Visual & observation

Absolute magnitude (H): 19.66

Discovery & classification

Discovered by: Pan-STARRS 2
Discovery date: 23 January 2019
Discovery site: Haleakala

Also known as 2019 BO1

Apollo Near-Earth Object

Close approaches 19 on record

When (UTC)	Body	Distance	Lunar distances	Relative speed
2037-01-27 22:31:00	Venus	0.1179 AU	45.9 LD	13.7 km/s
2050-08-09 05:56:00	Venus	0.0963 AU	37.5 LD	13.5 km/s
2064-02-20 22:00:00	Venus	0.0993 AU	38.7 LD	13.5 km/s
2077-09-06 15:19:00	Venus	0.1339 AU	52.1 LD	14 km/s
2101-08-15 11:08:00	Venus	0.1193 AU	46.4 LD	15.9 km/s
2115-02-28 18:01:00	Venus	0.0908 AU	35.3 LD	15.2 km/s
2128-09-11 10:07:00	Venus	0.0867 AU	33.7 LD	15.1 km/s
2142-03-23 13:02:00	Venus	0.1211 AU	47.1 LD	16 km/s
2172-06-02 13:49:00	Venus	0.1161 AU	45.2 LD	13.7 km/s
2185-12-12 21:32:00	Venus	0.0944 AU	36.7 LD	13.4 km/s

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

Sources

visual properties: JPL SBDB (lookup)
orbital elements: JPL SBDB