1999 BL18

1999BL18, 2001 QS291, 2001QS291, 42794, J99B18L, K01QT1S

All data for this body: [vot]

MPC data
Name (number) 1999 BL18 (42794)
a 2.46010
e 0.12726
i / sin(i) 10.1805 / 0.17675
q 2.14702
Q 2.77319
ω 208.0187
Node 359.7120
m 207.6076
n 0.2554
Epoch 2460800.5
nobs 3345
nopp 23
Years observed 1955-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.462
ep 0.157
sin(ip) 0.176
G 0.150
H 13.940
Mass
D 4.54 0.185
pV 0.252 0.0339
Value
Rotational Period 7.962
Period quality 2
Spectral Class S
Spectral Class Score 9.998
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4620 0.1569 0.1759 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.44 0.910 0.910 Nugent 2016AJ....152...63N NEATM
4.54 0.189 0.189 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.200 0.1000 0.1000 Nugent 2016AJ....152...63N NEATM
0.259 0.0360 0.0360 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
13.94 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
7.9624 2 Sidereal Durech 2023A&A...675A..24D Model
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 None Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.9996 0.9996 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT