1991 AD

1991AD, 07765, 1954 WT, 1954WT, 1981 YE1, 1981YE1, 1982 BN12, 1982BN12, 1985 UB1, 1985UB1, J54W00T, J81Y01E, J82B12N, J85U01B, J91A00D

All data for this body: [vot]

MPC data
Name (number) 1991 AD (7765)
a 2.69861
e 0.17237
i / sin(i) 7.6741 / 0.13354
q 2.23346
Q 3.16377
ω 126.8023
Node 261.5352
m 334.2419
n 0.2223
Epoch 2460800.5
nobs 6630
nopp 31
Years observed 1982-2025
rms 0.49
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.699
ep 0.172
sin(ip) 0.154
G 0.150
H 13.060
Mass
D 7.78 0.272
pV 0.286 0.0260
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6986 0.1724 0.1540 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.72 0.333 0.333 Masiero 2011ApJ...741...68M NEATM
7.91 0.472 0.472 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.283 0.0305 0.0305 Masiero 2011ApJ...741...68M NEATM
0.296 0.0496 0.0496 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
13.06 MPC-2023-12-04 MPC-2023-12-04 Phot