1999 SR18

1999SR18, 1972 LA1, 1972LA1, 42923, J72L01A, J99S18R

All data for this body: [vot]

MPC data
Name (number) 1999 SR18 (42923)
a 2.22637
e 0.18628
i / sin(i) 6.8128 / 0.11863
q 1.81164
Q 2.64110
ω 168.5850
Node 117.5569
m 310.2708
n 0.2967
Epoch 2460800.5
nobs 3738
nopp 22
Years observed 1972-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent Flora (8)
 
ap 2.227
ep 0.150
sin(ip) 0.105
G 0.150
H 14.050
Mass
D 3.79 0.850
pV 0.260 0.1500
Value
Rotational Period 8.390
Period quality 3
Spectral Class S
Spectral Class Score 7.545
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
8 Flora 0 Flora Novakovic 2019EPSC...13.1671N HCM
8 Flora 402 Flora 0.2200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2265 0.1498 0.1051 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.79 0.850 0.850 Nugent 2016AJ....152...63N NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.260 0.1500 0.1500 Nugent 2016AJ....152...63N 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
14.05 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
7.141 2- Synodic Erasmus 2020ApJS..247...13E Lightcurve
8.3889 2 Sidereal Hanus 2016A&A...586A.108H Model
8.392 3 Synodic Clark 2007MPBu...34...19C Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.278 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.9795 0.9795 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT