1991 FC4

1991FC4, 19172, 1998 FG25, 1998FG25, J91F04C, J98F25G

All data for this body: [vot]

MPC data
Name (number) 1991 FC4 (19172)
a 2.34070
e 0.14129
i / sin(i) 2.3176 / 0.04044
q 2.00998
Q 2.67143
ω 269.2237
Node 251.8933
m 212.5829
n 0.2752
Epoch 2460800.5
nobs 2551
nopp 23
Years observed 1991-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.341
ep 0.181
sin(ip) 0.057
G 0.150
H 15.170
Mass
D 5.86 0.082
pV 0.048 0.0083
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 10.087
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3415 0.1810 0.0569 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.70 1.346 1.346 Masiero 2017AJ....154..168M NEATM
4.71 1.018 1.018 Masiero 2017AJ....154..168M NEATM
4.83 1.440 1.440 Masiero 2021PSJ.....2..162M NEATM
5.88 0.083 0.083 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.043 0.0089 0.0089 Masiero 2011ApJ...741...68M NEATM
0.076 0.0310 0.0520 Masiero 2021PSJ.....2..162M NEATM
0.081 0.0317 0.0317 Masiero 2017AJ....154..168M NEATM
0.082 0.0514 0.0514 Masiero 2017AJ....154..168M 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
15.17 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
B DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT
B C 0.1467 0.5410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.30 Bus VIS Carvano 2010A&A...510A..43C PHOT
C C 0.5439 0.5410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.7039 0.5410 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT