1999 XB169

1999XB169, 1976 JT8, 1976JT8, 1997 ED54, 1997ED54, 49909, J76J08T, J97E54D, J99XG9B

All data for this body: [vot]

MPC data
Name (number) 1999 XB169 (49909)
a 2.32313
e 0.13471
i / sin(i) 3.7639 / 0.06565
q 2.01019
Q 2.63608
ω 86.6922
Node 22.5783
m 39.7151
n 0.2784
Epoch 2460800.5
nobs 1984
nopp 20
Years observed 1976-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.324
ep 0.161
sin(ip) 0.061
G 0.150
H 15.580
Mass
D 3.80 0.577
pV 0.084 0.0313
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3237 0.1613 0.0607 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.53 1.030 1.030 Masiero 2020PSJ.....1....5M NEATM
3.89 0.760 0.760 Masiero 2020PSJ.....1....5M NEATM
4.12 1.730 1.730 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.079 0.0460 0.0460 Masiero 2012ApJ...759L...8M NEATM
0.081 0.0560 0.0560 Masiero 2020PSJ.....1....5M NEATM
0.098 0.0660 0.0660 Masiero 2020PSJ.....1....5M 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
15.58 MPC-2023-12-04 MPC-2023-12-04 Phot