1987 ST11

1987ST11, 09740, 1969 UQ2, 1969UQ2, J69U02Q, J87S11T

All data for this body: [vot]

MPC data
Name (number) 1987 ST11 (9740)
a 2.36048
e 0.13107
i / sin(i) 5.7823 / 0.10075
q 2.05109
Q 2.66986
ω 356.1194
Node 45.2043
m 106.0332
n 0.2718
Epoch 2460800.5
nobs 3181
nopp 23
Years observed 1969-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.361
ep 0.114
sin(ip) 0.088
G 0.150
H 14.110
Mass
D 7.66 0.065
pV 0.094 0.0088
Value
Rotational Period 10.000
Period quality 2
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3611 0.1137 0.0880 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.26 1.550 1.550 Masiero 2020PSJ.....1....5M NEATM
7.24 2.590 2.590 Masiero 2021PSJ.....2..162M NEATM
7.33 1.649 1.649 Masiero 2017AJ....154..168M NEATM
7.66 0.065 0.065 Masiero 2011ApJ...741...68M NEATM
9.19 4.010 4.010 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.063 0.1100 0.1100 Masiero 2012ApJ...759L...8M NEATM
0.082 0.0461 0.0461 Masiero 2017AJ....154..168M NEATM
0.085 0.0510 0.0510 Masiero 2020PSJ.....1....5M NEATM
0.085 0.0400 0.0780 Masiero 2021PSJ.....2..162M NEATM
0.095 0.0093 0.0093 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
14.11 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
10.15346 2 Sidereal Durech 2020A&A...643A..59D Model
10.1536 2 Sidereal Durech 2023A&A...675A..24D Model
10.3 2 Synodic Yeh 2020AJ....160...73Y Lightcurve