2004 FR121

2004FR121, 1998 FT138, 1998FT138, 2000 SR5, 2000SR5, 2851 P-L, 2851P-L, 90551, J98FD8T, K00S05R, K04FC1R, PLS2851

All data for this body: [vot]

MPC data
Name (number) 2004 FR121 (90551)
a 3.21372
e 0.00830
i / sin(i) 32.2113 / 0.53304
q 3.18703
Q 3.24040
ω 207.0760
Node 188.7433
m 49.2345
n 0.1711
Epoch 2460800.5
nobs 1022
nopp 19
Years observed 1960-2025
rms 0.87
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.214
ep 0.016
sin(ip) 0.535
G 0.150
H 14.500
Mass
D 3.72 0.439
pV 0.267 0.0643
Value
Rotational Period 4.305
Period quality 2
Spectral Class C
Spectral Class Score 9.034
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
77899 2001 TS117 -1 2001TS117 -1.0000 Nesvorny 2024ApJS..274...25N HCM-2024
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.2138 0.0164 0.5346 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.72 0.439 0.439 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.267 0.0643 0.0643 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
14.50 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.30529 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
C 0.617 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C C 0.0481 0.3850 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.4168 0.3850 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C C 0.4238 0.3850 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT