Underhill

02154, 1958 GU, 1958GU, 1973 SN4, 1973SN4, 1973 UC4, 1973UC4, 1979 DB, 1979DB, 2015 P-L, 2015P-L, J58G00U, J73S04N, J73U04C, J79D00B, PLS2015

All data for this body: [vot]

MPC data
Name (number) Underhill (2154)
a 2.63501
e 0.12590
i / sin(i) 7.7407 / 0.13469
q 2.30326
Q 2.96677
ω 120.1559
Node 0.6927
m 299.5285
n 0.2304
Epoch 2460800.5
nobs 6438
nopp 30
Years observed 1958-2025
rms 0.50
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.635
ep 0.149
sin(ip) 0.137
G 0.150
H 13.260
Mass
D 12.55 0.131
pV 0.080 0.0143
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6355 0.1495 0.1373 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.95 2.950 2.950 Masiero 2020PSJ.....1....5M NEATM
12.55 0.131 0.131 Masiero 2011ApJ...741...68M NEATM
14.03 2.520 2.520 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.068 0.0210 0.0210 Masiero 2012ApJ...759L...8M NEATM
0.080 0.0490 0.0490 Masiero 2020PSJ.....1....5M NEATM
0.093 0.0212 0.0212 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
13.26 MPC-2023-12-04 MPC-2023-12-04 Phot