4556 P-L

4556P-L, 15647, 1991 RT21, 1991RT21, J91R21T, PLS4556

All data for this body: [vot]

MPC data
Name (number) 4556 P-L (15647)
a 2.99491
e 0.14024
i / sin(i) 3.1466 / 0.05489
q 2.57491
Q 3.41491
ω 331.3527
Node 43.1606
m 151.3907
n 0.1902
Epoch 2460800.5
nobs 2691
nopp 25
Years observed 1960-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.999
ep 0.102
sin(ip) 0.045
G 0.150
H 13.810
Mass
D 4.81 1.352
pV 0.366 0.1390
Value
Rotational Period 7.586
Period quality 2
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9987 0.1015 0.0453 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.81 1.352 1.352 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.366 0.1390 0.1390 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
13.81 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
7.5866 2 Sidereal Durech 2023A&A...675A..24D Model