295 Theresia

295 Theresia

Discovery
Discovered by	Johann Palisa
Discovery date	17 August 1890
Designations
Named after	Maria Theresa
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	116.73 yr (42635 d)
Aphelion	3.27560 AU (490.023 Gm)
Perihelion	2.31460 AU (346.259 Gm)
Semi-major axis	2.79510 AU (418.141 Gm)
Eccentricity	0.17191
Orbital period	4.67 yr (1706.8 d)
Average orbital speed	17.8 km/s
Mean anomaly	266.698°
Mean motion	0° 12^m 39.294^s / day
Inclination	2.70824°
Longitude of ascending node	276.055°
Argument of perihelion	148.036°
Earth MOID	1.32693 AU (198.506 Gm)
Jupiter MOID	2.04516 AU (305.952 Gm)
Jupiter Tisserand parameter	3.304
Physical characteristics
Dimensions	27.72±1.9 km[2]
Mass	unknown
Mean density	unknown
Equatorial surface gravity	unknown
Equatorial escape velocity	unknown
Rotation period	10.730 h (0.4471 d)
Geometric albedo	0.1930±0.029
Temperature	unknown
Spectral type	unknown
Absolute magnitude (H)	10.19

295 Theresia is a typical Main belt asteroid.^[3] It was discovered by Johann Palisa on August 17, 1890 in Vienna.^[4]

References

1. "295 Theresia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
2. Billings, Lee (2016-05-27). "For Asteroid-Hunting Astronomers, Nathan Myhrvold Says the Sky Is Falling". Scientific American. Retrieved 2016-06-09.
3. "295 Theresia". Asteroid Occultation. Retrieved 6 April 2015.
4. Schmadel, Lutz D (11 November 2013). Dictionary of Minor Planet Names. 1 (3 ed.). Springer Science & Business Media. pp. 60–61. ISBN 978-3-662-06615-7. OCLC 809148995. Retrieved 9 June 2016.

External links

• 295 Theresia at the JPL Small-Body Database
  
  • Discovery · Orbit diagram · Orbital elements · Physical parameters