1999 RT21

1999RT21, 74615, J99R21T

All data for this body: [vot]

MPC data
Name (number) 1999 RT21 (74615)
a 2.41245
e 0.19809
i / sin(i) 2.2691 / 0.03959
q 1.93456
Q 2.89035
ω 246.3119
Node 99.4956
m 310.5359
n 0.2630
Epoch 2460800.5
nobs 933
nopp 20
Years observed 1994-2025
rms 0.80
Best values
[raw, vot]

Value Standard error
Parent Massalia (20)
 
ap 2.412
ep 0.162
sin(ip) 0.023
G 0.150
H 16.330
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 4.260
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
20 Massalia 0 Massalia Novakovic 2019EPSC...13.1671N HCM
20 Massalia 404 Massalia 0.0900 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4119 0.1615 0.0228 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
16.33 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
S 0.710 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT