726 Joëlla

726 Joëlla is a minor planet orbiting the Sun. It was discovered on November 22, 1911, by Joel Hastings Metcalf, in Winchester, Massachusetts, in the United States.

726 Joëlla

Discovery
Discovered by	Joel Hastings Metcalf
Discovery site	Winchester, Massachusetts
Discovery date	22 November 1911
Designations
MPC designation	(726) Joëlla
Pronunciation	/dʒoʊˈɛlə/
Alternative designations	1911 NM
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	84.76 yr (30958 d)
Aphelion	3.2978 AU (493.34 Gm)
Perihelion	1.8387 AU (275.07 Gm)
Semi-major axis	2.5683 AU (384.21 Gm)
Eccentricity	0.28407
Orbital period	4.12 yr (1503.4 d)
Mean anomaly	203.587°
Mean motion	0° 14^m 22.092^s / day
Inclination	15.414°
Longitude of ascending node	242.040°
Argument of perihelion	112.979°
Physical characteristics
Mean radius	22.01±1.75 km
Rotation period	13.04 h (0.543 d)
Geometric albedo	0.0539±0.010
Absolute magnitude (H)	10.57

References

1. "726 Joella (1911 NM)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.

External links

• 726 Joëlla at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 726 Joëlla at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters