1998 GD9

1998GD9, 1999 SJ20, 1999SJ20, 35568, J98G09D, J99S20J

All data for this body: [vot]

MPC data
Name (number) 1998 GD9 (35568)
a 2.52982
e 0.18254
i / sin(i) 14.2506 / 0.24616
q 2.06802
Q 2.99163
ω 152.8248
Node 147.2548
m 184.2782
n 0.2449
Epoch 2460800.5
nobs 2946
nopp 21
Years observed 1998-2025
rms 0.72
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.530
ep 0.161
sin(ip) 0.235
G 0.150
H 13.740
Mass
D 5.02 0.147
pV 0.336 0.0245
Value
Rotational Period
Period quality None
Spectral Class L
Spectral Class Score 4.368
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 502 Eunomia -1.2500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5301 0.1608 0.2350 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.02 0.147 0.147 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.336 0.0245 0.0245 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
13.74 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
L 0.728 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT