Skip to content
Public Universe
Comet

Yeung

Add to an observing list or journal →

172P/Yeung

Where is it now

Distance from Sun
3.654 AU
True anomaly
67.01°
Distance from Earth
3.618 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.995 AU from the Sun Earth Yeung — 3.654 AU from the Sun Yeung
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Yeung is 3.618 AU from Earth today (30.1 light-minutes).

In the sky

Right ascension
19h 50m 30s
Declination
-32° 32′ 12″
Constellation
Sagittarius
Distance from Earth
3.63 AU
Elongation from the Sun
83.7° — well clear of the Sun

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
4.18 AU
Eccentricity
0.2229
Inclination
11.3°
Orbital period
8.54 years
Perihelion
3.248 AU
Aphelion
5.111 AU
Longitude of ascending node
33.48°
Argument of periapsis
208.81°
Epoch · J2000
2456502.5
Orbit class · JFc
Jupiter-family comet (P < 20 y)
Earth MOID · 872.7 LD
2.2425 AU
Tisserand (Jupiter)
2.958

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
804
Data arc
32.72 years
First observed
20 October 1993
Last observed
9 July 2026
Residual RMS
0.44 ″
Solution · Otto Matic
7 August 2026

Visual & observation

Absolute magnitude (H)
14.8
Total magnitude M₁ · K₁ 4.5
14.8

Discovery & classification

Also known as 172P · 172P/2001 CB40 · 172P/2002 BV

Named

Close approaches 12 on record

When (UTC) Body Distance Lunar distances Relative speed
2043-12-19 09:00:00 Juptr 1.8867 AU 734.3 LD 4.1 km/s
2048-07-08 03:51:00 Juptr 1.6931 AU 658.9 LD 6.4 km/s
2070-12-24 22:49:00 Juptr 1.2804 AU 498.3 LD 6.4 km/s
2075-09-16 21:59:00 Juptr 1.6935 AU 659.1 LD 4.3 km/s
2106-05-04 00:38:00 Jupiter 0.3063 AU 119.2 LD 4.5 km/s
2106-05-04 00:38:00 Juptr 0.3063 AU 119.2 LD 4.5 km/s
2118-03-20 09:33:00 Juptr 1.3409 AU 521.8 LD 6.2 km/s

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

Sources