1999 JR54

1999JR54, 17977, 1991 RT24, 1991RT24, 1998 FC87, 1998FC87, J91R24T, J98F87C, J99J54R

All data for this body: [vot]

MPC data
Name (number) 1999 JR54 (17977)
a 2.66373
e 0.24372
i / sin(i) 12.9424 / 0.22397
q 2.01451
Q 3.31294
ω 308.3848
Node 34.0258
m 274.4037
n 0.2267
Epoch 2460800.5
nobs 2450
nopp 23
Years observed 1991-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.664
ep 0.202
sin(ip) 0.216
G 0.150
H 14.110
Mass
D 6.08 0.201
pV 0.157 0.0134
Value
Rotational Period
Period quality None
Spectral Class X
Spectral Class Score 3.156
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6641 0.2020 0.2162 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.38 1.290 1.290 Masiero 2020PSJ.....1....5M NEATM
6.09 0.203 0.203 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.157 0.0136 0.0136 Masiero 2011ApJ...741...68M NEATM
0.158 0.0850 0.0850 Masiero 2020PSJ.....1....5M 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
14.11 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
X 0.526 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT