1397 Umtata

1397 Umtata
Discovery[1]
Discovered byC. Jackson
Discovery siteJohannesburg Obs.
Discovery date9 August 1936
Designations
(1397) Umtata
Named after
Mthatha[2]
(South-African town)
1936 PG · 1931 GK
1945 QF · 1945 RC
1948 EB1
main-belt · (middle)[3]
background[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc81.14 yr (29,638 days)
Aphelion3.3646 AU
Perihelion1.9967 AU
2.6806 AU
Eccentricity0.2551
4.39 yr (1,603 days)
173.37°
0° 13m 28.56s / day
Inclination3.5109°
77.437°
206.53°
Physical characteristics
Dimensions20.35±0.30 km[5]
20.40 km (derived)[3]
20.798±0.292 km[6]
22.895±0.285 km[7]
30 h[8]
0.0794±0.0140[7]
0.084±0.046[6]
0.10 (assumed)[3]
0.112±0.004[5]
S/C[3]
B–V = 0.690[1]
U–B = 0.210[1]
11.47[1][5] · 11.57[3][7][8]

1397 Umtata, provisional designation 1936 PG, is an asteroid from the background population of the asteroid belt's central region, approximately 21 kilometers in diameter. It was discovered by South-African astronomer Cyril Jackson at the Union Observatory in Johannesburg on 9 August 1936.[9] The asteroid was named after the South-African town of Mthatha, formerly known as Umtata.[2]

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  8. ^ a b Cite error: The named reference Binzel-1987b was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference MPC-object was invoked but never defined (see the help page).