1120 Cannonia

1120 Cannonia

Discovery [1]
Discovered by	P. Shajn
Discovery site	Simeiz Observatory
Discovery date	11 September 1928
Designations
MPC designation	1120 Cannonia
Named after	Annie Jump Cannon[2]
Alternative names	1928 RV · 1956 AG
Minor planet category	main-belt
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	73.13 yr (26711 days)
Aphelion	2.5611 AU (383.14 Gm)
Perihelion	1.8712 AU (279.93 Gm)
Semi-major axis	2.2162 AU (331.54 Gm)
Eccentricity	0.15566
Orbital period	3.30 yr (1205.0 d)
Mean anomaly	214.43°
Mean motion	0° 17^m 55.5^s / day
Inclination	4.0492°
Longitude of ascending node	158.67°
Argument of perihelion	219.80°
Earth MOID	0.873587 AU (130.6868 Gm)
Jupiter MOID	2.89574 AU (433.197 Gm)
Jupiter Tisserand parameter	3.634
Physical characteristics
Rotation period	3.816 h (0.1590 d)
Absolute magnitude (H)	12.0

1120 Cannonia is a main belt asteroid orbiting the Sun. It was discovered by Russian astronomer Pelageya Shajn on September 11, 1928, at Simeiz Observatory in Crimea. Its provisional designation was 1928 RV. It was independently discovered by Grigory Neujmin at Simeis two days later, and ten days later by Eugène Delporte at Uccle. The asteroid completes one rotation approximately once every 3.8 hours and makes one revolution around the Sun about once every 3.3 years.^[1]

It was named for American astronomer Annie Jump Cannon, who classified the spectral types of about 225,000 stars for the Henry Draper Catalog.^[2]

References

1. "JPL Small-Body Database Browser: 1120 Cannonia (1928 RV)" (2015-04-01 last obs.). Jet Propulsion Laboratory. Retrieved 2 May 2016.
2. Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1120) Cannonia. Springer Berlin Heidelberg. p. 95. ISBN 978-3-540-29925-7. Retrieved 22 August 2016.

External links

• Dictionary of Minor Planet Names, Google books
• 1120 Cannonia at the JPL Small-Body Database
  
  • Discovery · Orbit diagram · Orbital elements · Physical parameters