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Asteroid Near-Earth

2023 BC2

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(2023 BC2)

Where is it now

Distance from Sun
0.92 AU
True anomaly
143.66°
Distance from Earth
1.064 AU
As of
16 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 — 0.997 AU from the Sun Earth 2023 BC2 — 0.92 AU from the Sun 2023 BC2
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 BC2 is 1.064 AU from Earth today (8.8 light-minutes).

In the sky

Right ascension
10h 08m 43s
Declination
+10° 07′ 04″
Constellation
Leo
Distance from Earth
1.06 AU
Elongation from the Sun
52.91° — 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
0.743 AU
Eccentricity
0.3952
Inclination
2.64°
Orbital period
233.9 days
Perihelion
0.449 AU
Aphelion
1.037 AU
Longitude of ascending node
123.62°
Argument of periapsis
183.38°
Epoch · J2000
2459968.5
Orbit class · ATE
Aten
Earth MOID · 5.9 LD
0.0153 AU
Tisserand (Jupiter)
7.697

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
45
Data arc
7 days
First observed
23 January 2023
Last observed
30 January 2023
Residual RMS
0.64 ″
Solution · Otto Matic
19 January 2024

Visual & observation

Absolute magnitude (H)
25.43

Discovery & classification

Aten Near-Earth Object

Close approaches 110 on record

Flyby geometry
Ecliptic flyby of 2023 BC2 at 2029-12-31 12:26 UTC Top-down view of the ecliptic, Earth at the centre, for the 2029-12-31 12:26 UTC close approach of 2023 BC2. Catalogue miss distance 55.9 LD · 2.15 × 10⁷ km. The curve is the geocentric path from 2029-12-28 to 2030-01-03, 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. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 55.9 LD · 2.15 × 10⁷ km 2029-12-31 12:26 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2029-12-31 12:26 UTC close approach of 2023 BC2. Catalogue miss distance 55.9 LD · 2.15 × 10⁷ km. The curve is the geocentric path from 2029-12-28 to 2030-01-03, 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. 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
2029-12-06 04:20:00 Venus 0.1287 AU 50.1 LD 8.8 km/s
2029-12-31 12:26:00 Earth 0.1437 AU 55.9 LD 13.5 km/s
2030-05-10 22:27:00 Earth 0.433 AU 168.5 LD 11 km/s
2030-07-21 05:07:00 Venus 0.0621 AU 24.2 LD 17.4 km/s
2032-02-20 20:01:00 Earth 0.0333 AU 13.0 LD 9.5 km/s
2034-02-11 15:47:00 Earth 0.4634 AU 180.4 LD 24.7 km/s
2037-01-09 06:18:00 Earth 0.4209 AU 163.8 LD 23.1 km/s
2039-01-06 13:19:00 Earth 0.0178 AU 6.9 LD 8.4 km/s
2040-10-05 12:04:00 Earth 0.4584 AU 178.4 LD 13.5 km/s
2041-02-20 06:31:00 Earth 0.2063 AU 80.3 LD 15.7 km/s

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

Sources