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Asteroid Near-Earth

455659

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455659 (2005 BO1)

Where is it now

Distance from Sun
0.704 AU
True anomaly
60.21°
Distance from Earth
0.676 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 455659 — 0.704 AU from the Sun 455659
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 455659 is 0.676 AU from Earth today (5.6 light-minutes).

In the sky

Right ascension
16h 46m 29s
Declination
-31° 38′ 13″
Constellation
Scorpius
Distance from Earth
0.67 AU
Elongation from the Sun
45.21° — 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
0.949 AU
Eccentricity
0.3563
Inclination
10.67°
Orbital period
337.9 days
Perihelion
0.611 AU
Aphelion
1.288 AU
Longitude of ascending node
113.32°
Argument of periapsis
174.22°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 58.7 LD
0.1507 AU
Tisserand (Jupiter)
6.265

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
102
Data arc
13.1 years
First observed
17 January 2005
Last observed
22 February 2018
Residual RMS
0.63 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
21.6

Discovery & classification

Discovered by
Spacewatch
Discovery date
17 January 2005
Discovery site
Kitt Peak

Also known as 2005 BO1

Aten Near-Earth Object

Close approaches 190 on record

Flyby geometry
Ecliptic flyby of 455659 at 2026-11-25 16:15 UTC Top-down view of the ecliptic, Earth at the centre, for the 2026-11-25 16:15 UTC close approach of 455659. Catalogue miss distance 189.2 LD · 7.27 × 10⁷ km. The curve is the geocentric path from 2026-11-22 to 2026-11-28, 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 189.2 LD · 7.27 × 10⁷ km 2026-11-25 16:15 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2026-11-25 16:15 UTC close approach of 455659. Catalogue miss distance 189.2 LD · 7.27 × 10⁷ km. The curve is the geocentric path from 2026-11-22 to 2026-11-28, 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
2026-11-25 16:15:00 Earth 0.4862 AU 189.2 LD 25.4 km/s
2027-11-11 05:27:00 Earth 0.1704 AU 66.3 LD 11.4 km/s
2028-08-20 21:17:00 Earth 0.3694 AU 143.8 LD 13.8 km/s
2028-12-27 01:18:00 Earth 0.2989 AU 116.3 LD 10.2 km/s
2029-06-29 02:15:00 Earth 0.4047 AU 157.5 LD 16.3 km/s
2030-02-10 00:13:00 Earth 0.2431 AU 94.6 LD 9.5 km/s
2030-04-26 00:30:00 Earth 0.3175 AU 123.6 LD 8.3 km/s
2031-03-02 11:26:00 Earth 0.2454 AU 95.5 LD 17.1 km/s
2039-11-14 22:40:00 Earth 0.2433 AU 94.7 LD 16.5 km/s
2040-09-15 22:29:00 Earth 0.3206 AU 124.8 LD 10 km/s

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

Sources