The comet 21P/Giacobini-Zinner

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From Cambridge , 21P/Giacobini-Zinner is not observable – it will reach its highest point in the sky during daytime and is 2° below the horizon at dawn.

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Name 21P/Giacobini-Zinner
Object Type Comet
Current Position
Constellation:Sextans
Magnitude:21.20 (V) [1]
Absolute mag (H):9.40 [2]
Slope parameter (n):5.84 [2]
Right ascension:10h12m [1]
Declination:-08°40' [1]
Distance:4.67 AU
38.84 lightmin [1]
Orbital Elements [1]
Semi-major axis:3.50 AU
Eccentricity:0.710421
Inclination:32.00°
Longitude ascending node:195.39°
Argument of perihelion:172.85°
Epoch of elements:14 May 2019
Mean Anomaly at epoch:37.04°
Derived quantities
Perihelion:1.01 AU
Aphelion:5.98 AU
Orbital period:6.54 years
Additional sources

Where possible, the brightnesses of comets are estimated from absolute magnitude values computed by the BAA Comet Section, based on the observations they receive. We prefer these to the Minor Planet Center's own magnitude estimates, since the latter are less often updated. Nonetheless, comets are intrinsically unpredictable objects, and magnitude estimates must always be taken with a pinch of salt.

Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EDT

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