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Asteroid Near-Earth Potentially hazardous

2025 BT1

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(2025 BT1)

Where is it now

Distance from Sun
1.042 AU
True anomaly
214.97°
Distance from Earth
1.653 AU
As of
20 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 — 0.996 AU from the Sun Earth 2025 BT1 — 1.042 AU from the Sun 2025 BT1
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 BT1 is 1.653 AU from Earth today (13.7 light-minutes).

In the sky

Right ascension
11h 39m 15s
Declination
+08° 21′ 47″
Constellation
Virgo
Distance from Earth
1.65 AU
Elongation from the Sun
36.76° — 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
0.905 AU
Eccentricity
0.2036
Inclination
23.42°
Orbital period
314.7 days
Perihelion
0.721 AU
Aphelion
1.09 AU
Longitude of ascending node
338.09°
Argument of periapsis
301.23°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 6.9 LD
0.0177 AU
Tisserand (Jupiter)
6.497

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
76
Data arc
30 days
First observed
20 January 2025
Last observed
19 February 2025
Residual RMS
0.48 ″
Solution · Otto Matic
24 February 2025

Visual & observation

Absolute magnitude (H)
21.58

Discovery & classification

Aten Near-Earth Object Potentially Hazardous Asteroid

Close approaches 35 on record

Flyby geometry
Ecliptic flyby of 2025 BT1 at 2031-02-28 12:14 UTC Top-down view of the ecliptic, Earth at the centre, for the 2031-02-28 12:14 UTC close approach of 2025 BT1. Catalogue miss distance 52.5 LD · 2.02 × 10⁷ km. The curve is the geocentric path from 2031-02-25 to 2031-03-03, 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. At closest approach the object is north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 52.5 LD · 2.02 × 10⁷ km 2031-02-28 12:14 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2031-02-28 12:14 UTC close approach of 2025 BT1. Catalogue miss distance 52.5 LD · 2.02 × 10⁷ km. The curve is the geocentric path from 2031-02-25 to 2031-03-03, 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. At closest approach the object is north 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
2029-10-11 06:59:00 Venus 0.0672 AU 26.2 LD 15.1 km/s
2031-02-28 12:14:00 Earth 0.1349 AU 52.5 LD 12.1 km/s
2034-01-31 06:06:00 Venus 0.065 AU 25.3 LD 15.1 km/s
2038-05-23 00:33:00 Venus 0.0692 AU 26.9 LD 15.1 km/s
2042-09-11 14:26:00 Venus 0.0808 AU 31.4 LD 15 km/s
2047-01-01 00:22:00 Venus 0.1002 AU 39.0 LD 14.9 km/s
2051-04-22 06:11:00 Venus 0.1291 AU 50.2 LD 14.9 km/s
2056-02-23 13:09:00 Earth 0.1043 AU 40.6 LD 15.1 km/s
2062-02-26 01:54:00 Earth 0.0199 AU 7.7 LD 13.3 km/s
2068-02-28 17:14:00 Earth 0.1225 AU 47.7 LD 12.2 km/s

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

Sources