1998 SS138

1998SS138, G4742, J98SD8S

All data for this body: [vot]

MPC data
Name (number) 1998 SS138 (164742)
a 2.69803
e 0.26594
i / sin(i) 12.1232 / 0.21002
q 1.98052
Q 3.41554
ω 161.0456
Node 201.5598
m 9.5310
n 0.2224
Epoch 2460800.5
nobs 928
nopp 17
Years observed 1998-2025
rms 0.81
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.697
ep 0.240
sin(ip) 0.208
G 0.150
H 15.720
Mass
D 3.81 0.655
pV 0.074 0.0246
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 1.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6969 0.2400 0.2076 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.54 1.100 1.100 Masiero 2021PSJ.....2..162M NEATM
3.95 1.236 1.236 Masiero 2017AJ....154..168M NEATM
3.96 1.086 1.086 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.069 0.0377 0.0377 Masiero 2017AJ....154..168M NEATM
0.078 0.0373 0.0373 Masiero 2011ApJ...741...68M NEATM
0.078 0.0420 0.0910 Masiero 2021PSJ.....2..162M 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
15.72 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 Kl None None Movis NIR Popescu 2018A&A...617A..12P PHOT