269 Justitia

269 Justitia

Discovery
Discovered by	Johann Palisa
Discovery date	21 September 1887
Designations
Alternative names	1942 XY
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	126.16 yr (46080 d)
Aphelion	3.17477 AU (474.939 Gm)
Perihelion	2.0555 AU (307.50 Gm)
Semi-major axis	2.61515 AU (391.221 Gm)
Eccentricity	0.21399
Orbital period	4.23 yr (1544.7 d)
Average orbital speed	18.41 km/s
Mean anomaly	219.582°
Mean motion	0° 13^m 59.016^s / day
Inclination	5.4799°
Longitude of ascending node	156.759°
Argument of perihelion	119.62°
Earth MOID	1.0457 AU (156.43 Gm)
Jupiter MOID	1.979 AU (296.1 Gm)
Jupiter Tisserand parameter	3.368
Physical characteristics
Dimensions	53.62±1.3 km
Mass	unknown
Mean density	unknown
Equatorial surface gravity	unknown
Equatorial escape velocity	unknown
Rotation period	33.128 h (1.3803 d)
Geometric albedo	0.0974±0.005
Temperature	unknown
Spectral type	unknown
Absolute magnitude (H)	9.7

269 Justitia is a fairly sizeable Main belt asteroid.

It was discovered by Johann Palisa on September 21, 1887 in Vienna.

The asteroid was named after Justitia, the Roman equivalent of Themis, the Greek goddess of justice (she also has an asteroid named after her, 24 Themis).

References

1. "269 Justitia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Lightcurve Data File

External links

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