1998 RR55

1998RR55, 2001 FH38, 2001FH38, 74201, J98R55R, K01F38H

All data for this body: [vot]

MPC data
Name (number) 1998 RR55 (74201)
a 2.54555
e 0.21635
i / sin(i) 4.2632 / 0.07434
q 1.99482
Q 3.09628
ω 17.6735
Node 235.5337
m 279.2611
n 0.2427
Epoch 2460800.5
nobs 2263
nopp 20
Years observed 1998-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.550
ep 0.240
sin(ip) 0.086
G 0.150
H 15.070
Mass
D 2.18 0.296
pV 0.488 0.1188
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.994
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5497 0.2403 0.0857 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.18 0.296 0.296 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.488 0.1188 0.1188 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
15.07 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 S 0.9990 0.4080 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V S 0.1327 0.4080 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V S 0.8107 0.4080 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT