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1922 Zulu information


1922 Zulu
Discovery[1]
Discovered byE. Johnson
Discovery siteJohannesburg Obs.
Discovery date25 April 1949
Designations
MPC designation
(1922) Zulu
Named after
Zulu (tribe)[2]
Alternative designations
1949 HC
Minor planet category
main-belt · (outer)[1][3]
2:1 res[4]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc67.70 yr (24,727 days)
Aphelion4.7945 AU
Perihelion1.6775 AU
Semi-major axis
3.2360 AU
Eccentricity0.4816
Orbital period (sidereal)
5.82 yr (2,126 days)
Mean anomaly
187.91°
Mean motion
0° 10m 9.48s / day
Inclination35.446°
Longitude of ascending node
226.53°
Argument of perihelion
31.395°
Earth MOID0.7153 AU
Jupiter MOID0.6296 AU
Physical characteristics
Dimensions12.41±2.60 km[5]
19.30 km (calculated)[3]
20.561±0.321 km[6][7]
Synodic rotation period
18.64±0.01 h[8]
18.65 h[9]
Geometric albedo
0.055±0.006[6][7]
0.057 (assumed)[3]
0.16±0.05[5]
Spectral type
C[3]
Absolute magnitude (H)
12.2[6] · 12.27±0.24[10] · 12.3[1][3][5]

1922 Zulu, provisional designation 1949 HC, is a carbonaceous asteroid in a strongly unstable resonance with Jupiter, located in the outermost regions of the asteroid belt, and approximately 20 kilometers in diameter. It was discovered on 25 April 1949, by South African astronomer Ernest Johnson at Union Observatory in Johannesburg, and named for the South African Zulu people.[2][11]

  1. ^ a b c d Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference lcdb was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Roig-2002 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Nugent-2015 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Stephens-2002e was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference geneva-obs was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference MPC-Zulu was invoked but never defined (see the help page).

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