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Comet Near-Earth

Yang-Gao

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325P/Yang-Gao

Where is it now

Distance from Sun
4.344 AU
True anomaly
213.33°
Distance from Earth
4.286 AU
As of
11 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth Yang-Gao — 4.344 AU from the Sun Yang-Gao
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Yang-Gao is 4.286 AU from Earth today (35.6 light-minutes).

In the sky

Right ascension
07h 30m 29s
Declination
+16° 02′ 08″
Constellation
Gemini
Distance from Earth
4.27 AU
Elongation from the Sun
87.21° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

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
3.406 AU
Eccentricity
0.6243
Inclination
16.33°
Orbital period
6.29 years
Perihelion
1.279 AU
Aphelion
5.532 AU
Longitude of ascending node
258.85°
Argument of periapsis
347°
Epoch · J2000
2455978.5
Orbit class · JFc
Jupiter-family comet (P < 20 y)
Earth MOID · 104.9 LD
0.2696 AU
Tisserand (Jupiter)
2.741

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
1,380
Data arc
71.33 years
First observed
28 May 1951
Last observed
24 September 2022
Residual RMS
0.67 ″
Solution · Otto Matic
14 June 2024

Visual & observation

Absolute magnitude (H)
15.4
Total magnitude M₁ · K₁ 14.5
15.4

Discovery & classification

Also known as 325P · 325P/2009 L2 · 325P/2015 J4

Near-Earth Object Named

Close approaches 17 on record

When (UTC) Body Distance Lunar distances Relative speed
2060-09-06 23:21:00 Juptr 0.9571 AU 372.5 LD 9.9 km/s
2071-10-17 20:28:00 Juptr 0.8067 AU 313.9 LD 6.5 km/s
2119-12-20 12:49:00 Juptr 0.8207 AU 319.4 LD 9.4 km/s
2131-04-08 07:30:00 Juptr 0.6588 AU 256.4 LD 6.6 km/s
2190-12-26 11:19:00 Juptr 0.2142 AU 83.4 LD 7.4 km/s
2190-12-26 11:19:00 Jupiter 0.2142 AU 83.4 LD 7.4 km/s

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

Sources