1997 YO21

1997YO21, 1991 PU30, 1991PU30, 1999 GU29, 1999GU29, 29523, J91P30U, J97Y21O, J99G29U

All data for this body: [vot]

MPC data
Name (number) 1997 YO21 (29523)
a 2.79387
e 0.10001
i / sin(i) 4.6529 / 0.08112
q 2.51445
Q 3.07330
ω 296.3675
Node 98.1787
m 9.6085
n 0.2111
Epoch 2460800.5
nobs 1694
nopp 22
Years observed 1977-2025
rms 0.79
Best values
[raw, vot]

Value Standard error
Parent Agnia (847)
 
ap 2.794
ep 0.073
sin(ip) 0.066
G 0.150
H 14.920
Mass
D 2.93 0.738
pV 0.325 0.1711
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
847 Agnia 0 Agnia Novakovic 2019EPSC...13.1671N HCM
847 Agnia 514 Agnia 0.3700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7943 0.0726 0.0655 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.93 0.738 0.738 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.325 0.1711 0.1711 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
14.92 MPC-2023-12-04 MPC-2023-12-04 Phot