C/2021 T4 (Lemmon) Real Time Tracker |
Right Ascension: 12.487556
Declination: 22.322779 (J2000) Magnitude: 16.02 (Estimated: JPL) Constellation: Coma
Sun Distance: 551150219 km [ km/s]
Earth Distance: 434136703 km [ km/s]
Perihelion: 31 Jul 2023 12:33 UTC [] |
This page shows Comet C/2021 T4 (Lemmon) location and other relevant astronomical data in real time. The celestial coordinates, magnitude, distances and speed are updated in real time and are computed using high quality data sets provided by the JPL Horizons ephemeris service (see acknowledgements for details). The sky map shown in the background represents a rectangular portion of the sky 60x40 arcminutes wide. By comparison the diameter of the full Moon is about 30 arcmins, so the full horizontal extent of the map is approximately 2 full Moons wide. Depending on the device you are using, the map can be dragged horizondally or vertically using the mouse or touchscreen. The deep sky image in the background is provided by the Digitized Sky Survey (acknowledgements).
List of bright objects (stars brighter than magnitude 9.0 and galaxies brighter than magmitude 14.0) close to Comet C/2021 T4 (Lemmon) (less than 1.5 degrees):
Type | Name | Magnitude | Ar | Dec |
Star | HIP 61420 | 5.7318 | 12h 35m 08s | +21° 52’ 53” |
Star | HIP 60640 | 7.5226 | 12h 25m 39s | +23° 21’ 04” |
Star | HIP 61023 | 8.5256 | 12h 30m 21s | +22° 25’ 35” |
Star | HIP 61394 | 4.79 | 12h 34m 51s | +22° 37’ 45” |
Star | HIP 61138 | 8.8228 | 12h 31m 41s | +22° 07’ 24” |
Star | HIP 61020 | 7.6394 | 12h 30m 19s | +21° 56’ 53” |
Star | HIP 60531 | 8.851 | 12h 24m 30s | +22° 09’ 54” |
Star | HIP 61151 | 7.5998 | 12h 31m 51s | +23° 16’ 09” |
Star | HIP 61028 | 8.6888 | 12h 30m 26s | +22° 52’ 48” |
Star | HIP 60611 | 8.52 | 12h 25m 22s | +23° 13’ 44” |
Star | HIP 60957 | 5.672 | 12h 29m 43s | +20° 53’ 46” |
Star | HIP 61120 | 7.8644 | 12h 31m 33s | +21° 34’ 36” |
Star | HIP 61143 | 7.9432 | 12h 31m 45s | +22° 58’ 10” |
Star | HIP 60585 | 8.5314 | 12h 25m 04s | +22° 55’ 43” |
Galaxy | NGC 4455 | 13.1 | 12h 28m 44s | +22° 49’ 26” |
This online sky chart is created using the following astronomy databases and services: