Ishihara

09971, 1991 YC2, 1991YC2, 1993 HS, 1993HS, 1996 EU1, 1996EU1, J91Y02C, J93H00S, J96E01U

All data for this body: [vot]

MPC data
Name (number) Ishihara (9971)
a 2.18234
e 0.12129
i / sin(i) 2.7463 / 0.04791
q 1.91766
Q 2.44703
ω 246.2286
Node 20.5126
m 111.4988
n 0.3057
Epoch 2460200.5
nobs 3323
nopp 23
Years observed 1991-2023
rms 0.58
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.181
ep 0.117
sin(ip) 0.050
Value Standard error
G 0.150
H 14.020
Mass
D 5.01 0.069
pV 0.233 0.0281
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.1813 0.1172 0.0502 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.01 0.069 0.069 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.233 0.0281 0.0281 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
14.02 MPC-2023-12-04 MPC-2023-12-04 Phot