C/1995 Q1 (Bradfield)

For other comets with the same name, see Comet Bradfield.

C/1995 Q1 (Bradfield) is a non-periodic comet that became barely visible to the naked eye on August 1995.^[5] It was the 17th comet discovered by Australian astronomer, William A. Bradfield.

C/1995 Q1 (Bradfield)

Comet C/1995 Q1 (Bradfield) imaged by the European Southern Observatory on 20 August 1995
Discovery[1]
Discovered by	William A. Bradfield
Discovery site	Dernancourt, South Australia
Discovery date	17 August 1995
Orbital characteristics[2][3]
Epoch	23 October 1995 (JD 2450013.5)
Observation arc	173 days
Number of observations	156
Aphelion	~450 AU (inbound) ~380 AU (outbound)
Perihelion	0.436 AU
Semi-major axis	~220 AU
Eccentricity	0.99803
Orbital period	~3,360 years (inbound) ~2,640 years (outbound)
Inclination	147.39°
Longitude of ascending node	178.05°
Argument of periapsis	331.16°
Mean anomaly	0.016°
Last perihelion	31 August 1995
TJupiter	–0.666
Earth MOID	0.440 AU
Jupiter MOID	0.144 AU
Physical characteristics[4]
Mean radius	0.948 km (0.589 mi)[a]
Comet total magnitude (M1)	7.1
Apparent magnitude	5.2 (1995 apparition)[5]

Physical characteristics

Between August and September 1995, the Nançay Radio Observatory detected 18-cm emission lines of hydroxyl (OH) being produced from the comet.^[6] By November 1995, the Extreme Ultraviolet Explorer (EUVE) satellite searched the comet for any extreme ultraviolet (XUV) or soft x-ray radiation emanating from its coma, but neither were detected.^[7][8]