1999 SN21

1999SN21, 2006 DF145, 2006DF145, J99S21N, K06DE5F, Q9761

All data for this body: [vot]

MPC data
Name (number) 1999 SN21 (269761)
a 2.80430
e 0.11103
i / sin(i) 4.2243 / 0.07366
q 2.49295
Q 3.11566
ω 26.3612
Node 9.2159
m 149.6838
n 0.2099
Epoch 2460800.5
nobs 359
nopp 15
Years observed 1999-2025
rms 0.90
Best values
[raw, vot]

Value Standard error
Parent Agnia (847)
 
ap 2.805
ep 0.075
sin(ip) 0.070
G 0.150
H 16.560
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class V
Spectral Class Score 0.080
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 0.5400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8053 0.0752 0.0701 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
16.56 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
V V 0.0134 0.0134 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT