Alexandrinus

08969, 1218 T-2, 1218T-2, 1981 YJ1, 1981YJ1, 1990 ET5, 1990ET5, J81Y01J, J90E05T, T2S1218

All data for this body: [vot]

MPC data
Name (number) Alexandrinus (8969)
a 2.40715
e 0.07720
i / sin(i) 0.9664 / 0.01687
q 2.22131
Q 2.59299
ω 282.3890
Node 154.3478
m 71.0573
n 0.2639
Epoch 2460200.5
nobs 2742
nopp 25
Years observed 1955-2023
rms 0.60
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.407
ep 0.085
sin(ip) 0.019
Value Standard error
G 0.150
H 14.350
Mass
D 4.24 0.080
pV 0.247 0.0327
Rotational Period 4.690
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4071 0.0850 0.0188 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.24 0.080 0.080 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.247 0.0327 0.0327 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
14.35 MPC-2023-12-04 MPC-2023-12-04 Phot
Period data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.69 Durech 2018A&A...617A..57D Model
4.69 Durech 2023A&A...675A..24D Model