Robertball

04809, 1928 RB, 1928RB, 1969 PS, 1969PS, 1988 CP6, 1988CP6, J28R00B, J69P00S, J88C06P

All data for this body: [vot]

MPC data
Name (number) Robertball (4809)
a 2.56669
e 0.24773
i / sin(i) 13.6595 / 0.23615
q 1.93085
Q 3.20253
ω 173.5859
Node 169.1827
m 176.9047
n 0.2397
Epoch 2460800.5
nobs 4228
nopp 25
Years observed 1928-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.567
ep 0.215
sin(ip) 0.220
G 0.150
H 13.020
Mass
D 6.47 0.178
pV 0.335 0.0347
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 15.503
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5668 0.2147 0.2195 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.45 0.180 0.180 Masiero 2011ApJ...741...68M NEATM
7.46 2.050 2.050 Nugent 2016AJ....152...63N NEATM
7.54 1.550 1.550 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.210 0.1100 0.1100 Nugent 2016AJ....152...63N NEATM
0.259 0.1690 0.1690 Masiero 2012ApJ...759L...8M NEATM
0.354 0.0374 0.0374 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
13.02 MPC-2023-12-04 MPC-2023-12-04 Phot
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 0.928 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 0.98 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.9959 0.9959 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT