1524 Joensuu information

1524 Joensuu
Discovery
Discovered by	Y. Väisälä
Discovery site	Turku Obs.
Discovery date	18 September 1939
Designations
MPC designation	(1524) Joensuu
Named after	Joensuu (Finnish town)
Alternative designations	1939 SB · 1931 EL; 1933 QO · 1936 DG; 1958 DH1
Minor planet category	main-belt · (outer)
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	85.95 yr (31,395 days)
Aphelion	3.4881 AU
Perihelion	2.7300 AU
Semi-major axis	3.1090 AU
Eccentricity	0.1219
Orbital period (sidereal)	5.48 yr (2,002 days)
Mean anomaly	88.699°
Mean motion	0° 10m 47.28s / day
Inclination	12.687°
Longitude of ascending node	347.72°
Argument of perihelion	2.7611°
Physical characteristics
Dimensions	39.37±12.22 km; 42.79±1.1 km; 42.83 km (derived); 44.87±0.78 km; 45.056±0.291 km; 49.394±0.502 km
Synodic rotation period	9.276±0.007 h
Geometric albedo	0.0347±0.0053; 0.043±0.002; 0.0462±0.002; 0.050±0.008; 0.0505 (derived); 0.064±0.007; 0.07±0.05
Spectral type	C
Absolute magnitude (H)	10.56±0.50 · 10.60 · 10.7 · 10.78 · 10.8

1524 Joensuu, provisional designation 1939 SB, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 42 kilometers in diameter. It was discovered on 18 September 1939, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, and named for the town of Joensuu.^[12]

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[jpldata-1] Cite error: The named reference jpldata was invoked but never defined (see the help page).

[springer-2] Cite error: The named reference springer was invoked but never defined (see the help page).

[lcdb-3] Cite error: The named reference lcdb was invoked but never defined (see the help page).

[Nugent-2016-4] Cite error: The named reference Nugent-2016 was invoked but never defined (see the help page).

[SIMPS-5] Cite error: The named reference SIMPS was invoked but never defined (see the help page).

[AKARI-6] Cite error: The named reference AKARI was invoked but never defined (see the help page).

[Masiero-2012-7] Cite error: The named reference Masiero-2012 was invoked but never defined (see the help page).

[WISE-8] Cite error: The named reference WISE was invoked but never defined (see the help page).

[geneva-obs-9] Cite error: The named reference geneva-obs was invoked but never defined (see the help page).

[Masiero-2014-10] Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).

[Veres-2015-11] Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).

[MPC-Joensuu-12] Cite error: The named reference MPC-Joensuu was invoked but never defined (see the help page).

1524 Joensuu information

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