3122 Florence

3122 Florence

Discovery[1]
Discovered by	Bus, S. J.
Discovery site	Siding Spring
Discovery date	2 March 1981
Designations
MPC designation	1981 ET3
Named after	Florence Nightingale
Alternative names	MPO 319122, 1983 CN1
Minor planet category	Amor NEO, PHA[2]
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	13550 days (37.10 yr)
Aphelion	2.5163 AU (376.43 Gm) (Q)
Perihelion	1.0210 AU (152.74 Gm) (q)
Semi-major axis	1.7686 AU (264.58 Gm) (a)
Eccentricity	0.42274 (e)
Orbital period	2.35 yr (859.12 d)
Mean anomaly	100.15° (M)
Mean motion	0° 25^m 8.508^s / day (n)
Inclination	22.162° (i)
Longitude of ascending node	336.12° (Ω)
Argument of perihelion	27.723° (ω)
Earth MOID	0.0433248 AU (6.48130 Gm)
Jupiter MOID	2.98925 AU (447.185 Gm)
Jupiter Tisserand parameter	3.921
Physical characteristics
Dimensions	2.5 km (EARN)[3] 4.9 km (JPL)[2]
Mean radius	2.45 km
Rotation period	2.3581 h (0.09825 d)
Absolute magnitude (H)	14.1[2]

3122 Florence (or 1981 ET3, or 1983 CN1) is an Amor asteroid discovered on March 2, 1981 by S. J. Bus at Siding Spring. It is classified as a near-Earth asteroid and a Potentially Hazardous Asteroid (PHA).

On 2017-Sep-01 it will pass 0.04723 AU (7,066,000 km; 4,390,000 mi) from Earth^[4] and will be as bright as apparent magnitude 8.5.

References

1. "(3122) Florence = 1981 ET3 = 1983 CN1". Minor Planet Center. Retrieved 2015-06-04.
2. "JPL Small-Body Database Browser: 3122 Florence (1981 ET3)" (2012-04-29 last obs). Jet Propulsion Laboratory. Retrieved 14 April 2016.
3. "( 3122) Florence". The Near-Earth Asteroids Data Base at E.A.R.N. Retrieved 2012-06-17.
4. "JPL Close-Approach Data: 3122 Florence (1981 ET3)" (2012-04-29 last obs). Retrieved 2012-06-17.

External links

• 3122 Florence at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters