1998 SG57

1998SG57, 1999 XE103, 1999XE103, 69857, J98S57G, J99XA3E

All data for this body: [vot]

MPC data
Name (number) 1998 SG57 (69857)
a 2.86280
e 0.06347
i / sin(i) 2.5086 / 0.04377
q 2.68111
Q 3.04450
ω 11.9091
Node 38.9464
m 130.6485
n 0.2035
Epoch 2460800.5
nobs 2197
nopp 23
Years observed 1991-2025
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent Koronis (158)
 
ap 2.864
ep 0.046
sin(ip) 0.037
G 0.150
H 14.490
Mass
D 3.86 0.430
pV 0.188 0.0194
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 18.578
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
158 Koronis 0 Koronis Novakovic 2019EPSC...13.1671N HCM
158 Koronis 605 Koronis -0.0700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8637 0.0460 0.0373 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.86 0.430 0.430 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.188 0.0194 0.0194 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
14.49 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 S 0.3703 0.4820 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.215 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 0.82 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.2340 0.4820 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.5492 0.4820 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.6279 0.4820 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.8636 0.4820 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT