C/2017 K2 PanSTARRS - 2021/02/07

 

New comet C/2021 B3 NEOWISE

CBET 4929 & MPEC 2021-C16, issued on 2021, January 15, announce the discovery of a new comet has been designated C/2021 A7 NEOWISE.

A. Valvasori and E. Guido, performed follow-up measurements of this object while it was still on the PCCP webpage.

Stacking of 26 unfiltered exposure, 46 seconds each, obtained remotely on 2021, January 31.4 from Q62 (iTelescope, SSO Australia) through a 0.431 m f/6.8 Reflector + CCD, show that this object is a comet with a diffuse coma about 8" in diameter.

Mercury max elongation - 2021/01/24

 

New comet C/2021 A7 NEOWISE

CBET 4917 & MPEC 2021-A211, issued on 2021, January 15, announce the discovery of a new comet has been designated C/2021 A7 NEOWISE.

A. Valvasori and E. Guido, performed follow-up measurements of this object while it was still on the PCCP webpage.

Stacking of 24 unfiltered exposure, 60 seconds each, obtained remotely on 2021, January 12.7 from Q62 (iTelescope, SSO Australia) through a 0.431 m f/6.8 Reflector + CCD, show that this object is a comet with a diffuse coma about 11" in diameter.

            e (eccentricity)                    : 1.0000000

            q (perihelion distance)        : 1.9669950

            i (inclination)                      : 78.14270

      

           

156/P Russell-LINEAR near the Messier galaxy M33

 

156/P and M33

New comet C/2021 A1 Leonard

CBET 4907 & MPEC 2021-A99, issued on 2021, January 10, announce the discovery of a new comet has been designated C/2021 A1 Leonard.

A. Valvasori and E. Guido, performed follow-up measurements of this object while it was still on the PCCP webpage.

Stacking of 15 unfiltered exposure, 120 seconds each, obtained remotely on 2021, January 6.4 from H06 (iTelescope, New Mexico), through a 0.43 m f/4.5 Reflector + CCD, show that this object is a comet with a diffuse coma about 7" in diameter.

MPEC 2021-A99, assigns the following preliminary iperbolic orbital elements to comet C/2021 A1 Leonard: 

T 2022 Jan. 3.30380 TT                                                

q   0.6149314            (2000.0)                            

z  -0.0000792      Peri.  225.09089                 

 +/-0.0000139     Node   255.87128               

e   1.0000487      Incl.  132.68579          

Result of the July-September 2020 UAI campaign, MPB 48-1

 

The result of the July-September 2020 UAI campaign was published in Minor Planet Bulletin 48-1. Six main belt asteroids and one NEA were observed (375 Ursula, 444 Gyptis, 737 Arequipa, 1146 Biarmia, 1346 Gotha, 1656 Suomi, 2020 PL2) with the participation of eleven amateur observers.

MPB 48-1, pages 20-22