1999 XD118

1999XD118, 18878, 1976 SA8, 1976SA8, 1994 AS15, 1994AS15, 1998 HX61, 1998HX61, J76S08A, J94A15S, J98H61X, J99XB8D

All data for this body: [vot]

MPC data
Name (number) 1999 XD118 (18878)
a 2.19186
e 0.13833
i / sin(i) 5.0231 / 0.08756
q 1.88866
Q 2.49506
ω 282.9503
Node 37.5216
m 22.9406
n 0.3037
Epoch 2460800.5
nobs 3815
nopp 23
Years observed 1955-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.192
ep 0.077
sin(ip) 0.081
G 0.150
H 14.220
Mass
D 3.76 0.138
pV 0.344 0.0582
Value
Rotational Period 2.618
Period quality 2
Spectral Class S
Spectral Class Score 29.304
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.1921 0.0769 0.0805 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.76 0.138 0.138 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.344 0.0582 0.0582 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
14.22 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
2.61844 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.98 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.6396 0.7410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.6483 0.7410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9434 0.7410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9927 0.7410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 1.0000 0.7410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X 0.257 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT