1129 Neujmina

1129 Neujmina ^[1]

Discovery
Discovered by	Parchomenko, P.
Discovery date	8 August 1929
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	86.61 yr (31636 days)
Aphelion	3.2709 AU (489.32 Gm)
Perihelion	2.7820 AU (416.18 Gm)
Semi-major axis	3.0265 AU (452.76 Gm)
Eccentricity	0.080763
Orbital period	5.27 yr (1923.1 d)
Mean anomaly	130.1767°
Mean motion	0° 11^m 13.909^s / day
Inclination	8.6057°
Longitude of ascending node	269.3544°
Argument of perihelion	139.4936°
Earth MOID	1.79821 AU (269.008 Gm)
Jupiter MOID	2.04721 AU (306.258 Gm)
Jupiter Tisserand parameter	3.222
Physical characteristics
Mean radius	17.38±0.7 km
Rotation period	5.0844 h (0.21185 d)
Geometric albedo	0.1216±0.010
Absolute magnitude (H)	10.20

1129 Neujmina is a main belt asteroid orbiting the Sun. Approximately 35 kilometers in diameter, it makes a revolution around the Sun once every 5 years. It completes one rotation once every 8 hours. It was discovered by Praskovjya Parchomenko at Simeis on August 8, 1929.^[1] It was named for Grigory Nikolaevich Neujmin, an astronomer at the Pulkovo and Simeis Observatories, who discovered seven comets and more than 70 minor planets. Its provisional designation was 1929 PH.^[2]

Photometric observations of this asteroid collected during 2008 show a rotation period of 5.089 ± 0.004 hours with a brightness variation of 0.29 ± 0.02 magnitude.^[3]

References

1. "JPL Small-Body Database Browser". Retrieved 1 May 2016.
2. Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names. Springer. ISBN 3-540-00238-3.
3. Carbo, Landy; et al. (July 2009), "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory and Oakley Observatory: 2008 September and October", The Minor Planet Bulletin 36 (3): 91–94, Bibcode:2009MPBu...36...91C.

External links

• 1129 Neujmina at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters