1978 UX4

1978UX4, 1999 CA42, 1999CA42, 55721, J78U04X, J99C42A

All data for this body: [vot]

MPC data
Name (number) 1978 UX4 (55721)
a 2.41813
e 0.08940
i / sin(i) 7.1372 / 0.12425
q 2.20195
Q 2.63432
ω 274.9331
Node 356.6565
m 235.1974
n 0.2621
Epoch 2460800.5
nobs 1860
nopp 21
Years observed 1978-2025
rms 0.78
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.418
ep 0.089
sin(ip) 0.127
G 0.150
H 15.100
Mass
D 2.94 0.532
pV 0.187 0.1118
Value
Rotational Period
Period quality None
Spectral Class X
Spectral Class Score 5.781
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4185 0.0889 0.1268 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.94 0.532 0.532 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.187 0.1118 0.1118 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
15.10 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.589 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.3554 0.4830 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.6081 0.4830 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT