Roadrunner

16421, 1988 BJ, 1988BJ, J88B00J

All data for this body: [vot]

MPC data
Name (number) Roadrunner (16421)
a 1.93102
e 0.06380
i / sin(i) 22.8223 / 0.38788
q 1.80783
Q 2.05421
ω 234.1519
Node 309.7434
m 266.8553
n 0.3673
Epoch 2460800.5
nobs 4114
nopp 20
Years observed 1988-2025
rms 0.58
Best values
[raw, vot]

Value Standard error
Parent
 
ap 1.931
ep 0.057
sin(ip) 0.432
G 0.150
H 14.520
Mass
D 3.26 0.037
pV 0.260 0.0404
Value
Rotational Period 174.000
Period quality 3
Spectral Class Q
Spectral Class Score 18.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
1.9307 0.0565 0.4321 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.25 0.037 0.037 Masiero 2011ApJ...741...68M NEATM
3.40 0.960 0.960 Nugent 2016AJ....152...63N NEATM
3.72 1.213 1.213 Masiero 2017AJ....154..168M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.244 0.1375 0.1375 Masiero 2017AJ....154..168M NEATM
0.250 0.1200 0.1200 Nugent 2016AJ....152...63N NEATM
0.263 0.0451 0.0451 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
14.52 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
173.0 2 Synodic Warner 2012MPBu...39..158W Lightcurve
174.0 3 Synodic Warner 2014MPBu...41...27W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D D 0.8282 0.8282 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
L 0.21 Bus VIS Carvano 2010A&A...510A..43C PHOT
Q Sq Bus-DeMeo NIR Lucas 2019Icar..322..227L SPEC
S 1.000000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC