Skip to content
Public Universe
Asteroid Near-Earth

2021 FP

Add to an observing list or journal →

(2021 FP)

Where is it now

Distance from Sun
0.369 AU
True anomaly
37.31°
Distance from Earth
0.657 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 2021 FP — 0.369 AU from the Sun 2021 FP
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2021 FP is 0.657 AU from Earth today (5.5 light-minutes).

In the sky

Right ascension
13h 18m 42s
Declination
-19° 40′ 03″
Constellation
Virgo
Distance from Earth
0.66 AU
Elongation from the Sun
10.7° — 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
0.759 AU
Eccentricity
0.5493
Inclination
40.28°
Orbital period
241.6 days
Perihelion
0.342 AU
Aphelion
1.176 AU
Longitude of ascending node
176.32°
Argument of periapsis
171.19°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 59.2 LD
0.1522 AU
Tisserand (Jupiter)
7.342

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
69
Data arc
8.03 years
First observed
18 March 2015
Last observed
29 March 2023
Residual RMS
0.55 ″
Solution · Otto Matic
22 November 2023

Visual & observation

Absolute magnitude (H)
22.84

Discovery & classification

Aten Near-Earth Object

Close approaches 198 on record

Flyby geometry
Ecliptic flyby of 2021 FP at 2027-03-24 05:20 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-03-24 05:20 UTC close approach of 2021 FP. Catalogue miss distance 85.8 LD · 3.3 × 10⁷ km. The curve is the geocentric path from 2027-03-21 to 2027-03-27, 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 85.8 LD · 3.3 × 10⁷ km 2027-03-24 05:20 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-03-24 05:20 UTC close approach of 2021 FP. Catalogue miss distance 85.8 LD · 3.3 × 10⁷ km. The curve is the geocentric path from 2027-03-21 to 2027-03-27, 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
2027-03-24 05:20:00 Earth 0.2205 AU 85.8 LD 23.3 km/s
2029-03-23 03:42:00 Earth 0.2746 AU 106.9 LD 24.9 km/s
2031-03-22 08:25:00 Earth 0.3375 AU 131.3 LD 27 km/s
2033-03-19 22:06:00 Earth 0.4054 AU 157.8 LD 29.2 km/s
2034-01-19 20:35:00 Mercury 0.0575 AU 22.4 LD 50.8 km/s
2034-01-19 20:35:00 Merc 0.0575 AU 22.4 LD 50.8 km/s
2035-03-18 01:06:00 Earth 0.476 AU 185.3 LD 31.6 km/s
2036-09-12 10:03:00 Merc 0.014 AU 5.5 LD 48.2 km/s
2036-09-12 10:03:00 Mercury 0.014 AU 5.5 LD 48.2 km/s
2039-05-06 21:20:00 Mercury 0.0315 AU 12.3 LD 46.2 km/s

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

Sources