1998 YL2

1998YL2, 1977 DW7, 1977DW7, 1977 EJ2, 1977EJ2, 31388, J77D07W, J77E02J, J98Y02L

All data for this body: [vot]

MPC data
Name (number) 1998 YL2 (31388)
a 2.38300
e 0.12572
i / sin(i) 2.2041 / 0.03846
q 2.08341
Q 2.68258
ω 93.9598
Node 93.8765
m 8.5641
n 0.2679
Epoch 2460800.5
nobs 1331
nopp 22
Years observed 1977-2025
rms 0.81
Best values
[raw, vot]

Value Standard error
Parent Massalia (20)
 
ap 2.383
ep 0.165
sin(ip) 0.023
G 0.150
H 15.940
Mass
D 1.93 0.330
pV 0.272 0.0726
Value
Rotational Period 4.250
Period quality 2
Spectral Class S
Spectral Class Score 4.243
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
20 Massalia 0 Massalia Novakovic 2019EPSC...13.1671N HCM
20 Massalia 404 Massalia -0.8000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3826 0.1646 0.0234 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.93 0.330 0.330 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.272 0.0726 0.0726 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
15.94 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.254 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
4.27 1+ Synodic Polishook 2012MNRAS.421.2094P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S S 0.7072 0.3380 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X S 0.3147 0.3380 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT