K-type star · orange

HR 1684

HR 1684 is an orange in the constellation Orion 343 ly from Earth. Its surface is about 3,756 K, about 0.7 times the Sun's surface temperature, and it shines at 81.73× the Sun's brightness. At magnitude 5.2 it is bright enough to see with the naked eye; the light you see left it 343 years ago.

343 lybrightness mag 5.18K5III

Also catalogued as HD 33554 · HIP 24197

3,756 K
temperature
5.18
apparent magnitude
81.73× ☉
luminosity vs Sun
K5III
spectral type
Distance & comparison with our Sun
343 years
at light speed from Earth
0.65×
as hot as the Sun
81.73×
the Sun's light output
0.07
absolute magnitude
Explore from here · roam the neighborhood
HR 1684K-type
Sky regionOrionthis direction
Star11 Ori25 ly
StarHR 157632 ly
StarHR 181947 ly
StarHatysastar
StarTabitstar
Nearest stars
Bright stars in Orion
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.2To see it no equipment neededLook toward Orion

Star data from the HYG database v4.2 (Astronexus, CC BY-SA 4.0). Temperature and colour computed by gravityfinder from the B-V colour index; the illustration is generated from that temperature, not a photograph.