1997 AK21

1997AK21, 07540, 1970 CO, 1970CO, 1976 UL2, 1976UL2, 1979 OW11, 1979OW11, 1986 HE, 1986HE, 1987 QX12, 1987QX12, 1992 WA9, 1992WA9, J70C00O, J76U02L, J79O11W, J86H00E, J87Q12X, J92W09A, J97A21K

All data for this body: [vot]

MPC data
Name (number) 1997 AK21 (7540)
a 2.46174
e 0.07664
i / sin(i) 5.2781 / 0.09199
q 2.27308
Q 2.65040
ω 303.4991
Node 216.3018
m 85.2148
n 0.2552
Epoch 2460800.5
nobs 4228
nopp 28
Years observed 1970-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent Vesta (4)
 
ap 2.460
ep 0.111
sin(ip) 0.103
G 0.150
H 13.410
Mass
D 5.68 0.160
pV 0.287 0.0841
Value
Rotational Period 2.936
Period quality 2
Spectral Class K
Spectral Class Score 2.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
4 Vesta 401 Vesta Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4604 0.1110 0.1033 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.68 0.160 0.160 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.287 0.0841 0.0841 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
13.41 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
2.93616 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
K S DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT
S 0.226 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT