C/1844 Y1 (Great comet) is a large comet whose orbit does not match any defined comet orbit class. NASA JPL has not classified Great comet as potentially hazardous because its orbit does not bring it close to Earth.
Great comet orbits the sun every 0 days (0.00 years), coming as close as 0.25 AU and reaching as far as 717.55 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, Great comet is probably between 2658.000 to 5943.469 kilometers in diameter, making it the largest asteroid/dwarf planet, very roughly comparable in size to the U.S. state of Alaska.
Great comet's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is very close to Earth's orbit.
Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.
Great comet's orbit is determined by observations dating back to Dec. 27, 1844. It was last officially observed on March 9, 1845. The IAU Minor Planet Center records 41 observations used to determine its orbit.
The position of C/1844 Y1 (Great comet) is indicated by a ◯ pink circle. Note that the object may not be in your current field of view. Use the controls below to adjust position, location, and time.