Skip to content
Public Universe
Asteroid Near-Earth

2017 PK25

Add to an observing list or journal →

(2017 PK25)

Where is it now

Distance from Sun
0.86 AU
True anomaly
122.4°
Distance from Earth
1.773 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 2017 PK25 — 0.86 AU from the Sun 2017 PK25
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2017 PK25 is 1.773 AU from Earth today (14.7 light-minutes).

In the sky

Right ascension
14h 25m 51s
Declination
-01° 30′ 07″
Constellation
Virgo
Distance from Earth
1.78 AU
Elongation from the Sun
16.07° — too close to the Sun to observe

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
0.814 AU
Eccentricity
0.4371
Inclination
25.87°
Orbital period
268.2 days
Perihelion
0.458 AU
Aphelion
1.17 AU
Longitude of ascending node
140.78°
Argument of periapsis
324.34°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 2.2 LD
0.0056 AU
Tisserand (Jupiter)
7.033

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
14
Data arc
2 days
First observed
12 August 2017
Last observed
14 August 2017
Residual RMS
0.51 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
25.3

Discovery & classification

Aten Near-Earth Object

Close approaches 86 on record

Flyby geometry
Ecliptic flyby of 2017 PK25 at 2028-02-28 21:34 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-02-28 21:34 UTC close approach of 2017 PK25. Catalogue miss distance 183.6 LD · 7.06 × 10⁷ km. The curve is the geocentric path from 2028-02-25 to 2028-03-02, 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 183.6 LD · 7.06 × 10⁷ km 2028-02-28 21:34 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-02-28 21:34 UTC close approach of 2017 PK25. Catalogue miss distance 183.6 LD · 7.06 × 10⁷ km. The curve is the geocentric path from 2028-02-25 to 2028-03-02, 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
2028-02-28 21:34:00 Earth 0.4719 AU 183.6 LD 23.7 km/s
2028-08-13 13:51:00 Earth 0.0715 AU 27.8 LD 14.8 km/s
2031-08-08 06:53:00 Earth 0.2665 AU 103.7 LD 22.5 km/s
2036-04-24 12:52:00 Earth 0.4443 AU 172.9 LD 14.4 km/s
2036-07-11 22:20:00 Earth 0.3803 AU 148.0 LD 13.7 km/s
2039-03-10 06:58:00 Earth 0.4622 AU 179.9 LD 22.3 km/s
2039-08-11 17:21:00 Earth 0.1547 AU 60.2 LD 13.9 km/s
2042-08-11 01:32:00 Earth 0.1749 AU 68.0 LD 20 km/s
2047-06-29 23:29:00 Earth 0.4158 AU 161.8 LD 13.8 km/s
2050-03-20 05:20:00 Earth 0.4549 AU 177.0 LD 20.6 km/s

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

Sources