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Comet

Tenagra

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415P/Tenagra

Where is it now

Distance from Sun
4.568 AU
True anomaly
226.82°
Distance from Earth
3.698 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 Tenagra — 4.568 AU from the Sun Tenagra
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Tenagra is 3.698 AU from Earth today (30.8 light-minutes).

In the sky

Right ascension
00h 48m 04s
Declination
-17° 39′ 13″
Constellation
Cetus
Distance from Earth
3.7 AU
Elongation from the Sun
146.97° — 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
4.115 AU
Eccentricity
0.1952
Inclination
31.79°
Orbital period
8.35 years
Perihelion
3.312 AU
Aphelion
4.918 AU
Longitude of ascending node
160.33°
Argument of periapsis
346.45°
Epoch · J2000
2458426.5
Orbit class · JFc
Jupiter-family comet (P < 20 y)
Earth MOID · 905.9 LD
2.3278 AU
Tisserand (Jupiter)
2.747

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
199
Data arc
9.18 years
First observed
16 February 2013
Last observed
24 April 2022
Residual RMS
0.59 ″
Solution · Otto Matic
9 April 2025

Visual & observation

Absolute magnitude (H)
7.4
Total magnitude M₁ · K₁ 19
7.4

Discovery & classification

Also known as 415P · 415P/2013 EW90 · 415P/2020 Y4

Named

Close approaches 9 on record

When (UTC) Body Distance Lunar distances Relative speed
2033-12-22 22:47:00 Juptr 0.4645 AU 180.8 LD 7.3 km/s
2033-12-22 22:47:00 Jupiter 0.4645 AU 180.8 LD 7.3 km/s
2074-07-07 12:44:00 Juptr 1.7187 AU 668.9 LD 8.3 km/s
2111-09-30 05:12:00 Juptr 1.903 AU 740.6 LD 8.3 km/s
2116-08-21 03:24:00 Juptr 1.7524 AU 682.0 LD 8.8 km/s
2152-05-23 20:31:00 Juptr 0.6203 AU 241.4 LD 7.5 km/s

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

Sources