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Asteroid Near-Earth

2020 BW13

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(2020 BW13)

Where is it now

Distance from Sun
0.883 AU
True anomaly
311.42°
Distance from Earth
1.816 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 2020 BW13 — 0.883 AU from the Sun 2020 BW13
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2020 BW13 is 1.816 AU from Earth today (15.1 light-minutes).

In the sky

Right ascension
14h 43m 55s
Declination
-16° 04′ 45″
Constellation
Libra
Distance from Earth
1.82 AU
Elongation from the Sun
13.83° — too close to the Sun to observe

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
0.946 AU
Eccentricity
0.0944
Inclination
0.48°
Orbital period
336.1 days
Perihelion
0.857 AU
Aphelion
1.035 AU
Longitude of ascending node
297.98°
Argument of periapsis
349.32°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 2.3 LD
0.0058 AU
Tisserand (Jupiter)
6.349

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
42
Data arc
28 days
First observed
23 January 2020
Last observed
20 February 2020
Residual RMS
0.54 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
27.4

Discovery & classification

Aten Near-Earth Object

Close approaches 37 on record

Flyby geometry
Ecliptic flyby of 2020 BW13 at 2030-11-11 23:06 UTC Top-down view of the ecliptic, Earth at the centre, for the 2030-11-11 23:06 UTC close approach of 2020 BW13. Catalogue miss distance 34.2 LD · 1.32 × 10⁷ km. The curve is the geocentric path from 2030-11-08 to 2030-11-14, 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 34.2 LD · 1.32 × 10⁷ km 2030-11-11 23:06 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2030-11-11 23:06 UTC close approach of 2020 BW13. Catalogue miss distance 34.2 LD · 1.32 × 10⁷ km. The curve is the geocentric path from 2030-11-08 to 2030-11-14, 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
2030-11-11 23:06:00 Earth 0.0879 AU 34.2 LD 5.7 km/s
2031-06-23 23:35:00 Earth 0.156 AU 60.7 LD 4.2 km/s
2032-03-02 00:59:00 Earth 0.2043 AU 79.5 LD 9.3 km/s
2041-11-21 18:46:00 Earth 0.3898 AU 151.7 LD 15 km/s
2042-09-25 15:08:00 Earth 0.1036 AU 40.3 LD 2.2 km/s
2043-01-11 22:44:00 Earth 0.0508 AU 19.8 LD 2.4 km/s
2043-04-10 07:11:00 Earth 0.0942 AU 36.7 LD 1.6 km/s
2044-02-22 13:12:00 Earth 0.4026 AU 156.7 LD 15.4 km/s
2053-11-13 04:07:00 Earth 0.1843 AU 71.7 LD 8.6 km/s
2054-07-17 12:40:00 Earth 0.157 AU 61.1 LD 4.3 km/s

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

Sources