1999 WC21

1999WC21, 2005 YF219, 2005YF219, J99W21C, K05YL9F, P7697

All data for this body: [vot]

MPC data
Name (number) 1999 WC21 (257697)
a 3.10918
e 0.12374
i / sin(i) 1.7078 / 0.02980
q 2.72445
Q 3.49392
ω 79.4139
Node 59.5134
m 147.6105
n 0.1798
Epoch 2460800.5
nobs 314
nopp 17
Years observed 1999-2025
rms 0.92
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.109
ep 0.146
sin(ip) 0.019
G 0.150
H 16.380
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class V
Spectral Class Score 1.632
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
24 Themis 602 Themis -0.0500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1092 0.1463 0.0190 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
16.38 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
C V 0.0164 0.1890 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V V 0.2720 0.1890 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT