1998 BL8

1998BL8, 1985 PH2, 1985PH2, 37820, J85P02H, J98B08L

All data for this body: [vot]

MPC data
Name (number) 1998 BL8 (37820)
a 2.34004
e 0.21768
i / sin(i) 13.0537 / 0.22587
q 1.83066
Q 2.84943
ω 350.9001
Node 336.1485
m 38.7850
n 0.2753
Epoch 2460800.5
nobs 2791
nopp 21
Years observed 1985-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.340
ep 0.146
sin(ip) 0.220
G 0.150
H 14.030
Mass
D 7.63 0.024
pV 0.101 0.0087
Value
Rotational Period 4.233
Period quality 3
Spectral Class S
Spectral Class Score 4.048
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3398 0.1464 0.2198 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.61 1.870 1.870 Masiero 2012ApJ...759L...8M NEATM
6.72 1.740 1.740 Masiero 2020PSJ.....1....5M NEATM
6.97 1.960 1.960 Nugent 2016AJ....152...63N NEATM
7.02 0.100 0.100 Masiero 2014ApJ...791..121M NEATM
7.67 0.025 0.025 Masiero 2011ApJ...741...68M NEATM
8.48 0.610 0.610 Usui 2011PASJ...63.1117U NEATM
8.88 1.780 1.780 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.069 0.0280 0.0280 Ali-Lagoa 2018A&A...612A..85A NEATM
0.090 0.0900 0.0900 Nugent 2016AJ....152...63N NEATM
0.100 0.0099 0.0099 Masiero 2011ApJ...741...68M NEATM
0.106 0.0620 0.0620 Masiero 2020PSJ.....1....5M NEATM
0.119 0.0830 0.0830 Masiero 2012ApJ...759L...8M NEATM
0.150 0.0300 0.0300 Masiero 2014ApJ...791..121M 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
14.03 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.23268 3 Synodic Pravec LCDB Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
L 0.53 Bus VIS Carvano 2010A&A...510A..43C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.3414 0.3414 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT