1999 SU18

1999SU18, 33792, J99S18U

All data for this body: [vot]

MPC data
Name (number) 1999 SU18 (33792)
a 3.10841
e 0.18312
i / sin(i) 17.1305 / 0.29455
q 2.53921
Q 3.67762
ω 66.4967
Node 155.1746
m 2.2346
n 0.1798
Epoch 2460800.5
nobs 3618
nopp 24
Years observed 1997-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent Tirela (1400)
 
ap 3.112
ep 0.200
sin(ip) 0.291
G 0.150
H 12.950
Mass
D 7.64 0.369
pV 0.209 0.0223
Value
Rotational Period 8.447
Period quality 2
Spectral Class S
Spectral Class Score 5.592
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1400 Tirela 0 Tirela Novakovic 2019EPSC...13.1671N HCM
1400 Tirela 612 Tirela -0.1600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1123 0.2003 0.2909 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.64 0.369 0.369 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.209 0.0223 0.0223 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
12.95 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
8.4471 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.932 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT