Seanweber

1999 AD18, 1999AD18, 2000 HQ9, 2000HQ9, 28757, J99A18D, K00H09Q

All data for this body: [vot]

MPC data
Name (number) Seanweber (28757)
a 3.18206
e 0.17609
i / sin(i) 2.2254 / 0.03883
q 2.62172
Q 3.74240
ω 112.3021
Node 141.9859
m 126.4096
n 0.1736
Epoch 2460800.5
nobs 875
nopp 20
Years observed 1994-2025
rms 0.84
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.189
ep 0.189
sin(ip) 0.029
G 0.150
H 14.910
Mass
D 7.57 0.369
pV 0.049 0.0073
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 1.789
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1893 0.1894 0.0286 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.57 0.369 0.369 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.049 0.0073 0.0073 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
14.91 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C C 0.2982 0.1130 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V C 0.1360 0.1130 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X C 0.0923 0.1130 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT