1999 RW218

1999RW218, 1998 HZ149, 1998HZ149, 1999 NW8, 1999NW8, 38418, J98HE9Z, J99N08W, J99RL8W

All data for this body: [vot]

MPC data
Name (number) 1999 RW218 (38418)
a 2.53553
e 0.08128
i / sin(i) 2.1487 / 0.03749
q 2.32944
Q 2.74162
ω 198.5790
Node 127.5218
m 127.9027
n 0.2441
Epoch 2460800.5
nobs 1548
nopp 21
Years observed 1998-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.535
ep 0.055
sin(ip) 0.026
G 0.150
H 15.220
Mass
D 2.58 0.538
pV 0.290 0.0935
Value
Rotational Period 3.100
Period quality 2
Spectral Class S
Spectral Class Score 5.838
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5346 0.0548 0.0260 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.58 0.538 0.538 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.290 0.0935 0.0935 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
15.22 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.14 2 Synodic Yeh 2020AJ....160...73Y Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.973 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT