1991 RL18

1991RL18, 1999 NL61, 1999NL61, 2002 JB17, 2002JB17, 42489, J91R18L, J99N61L, K02J17B

All data for this body: [vot]

MPC data
Name (number) 1991 RL18 (42489)
a 2.59879
e 0.18375
i / sin(i) 12.7473 / 0.22065
q 2.12127
Q 3.07631
ω 223.5397
Node 179.4948
m 334.1013
n 0.2353
Epoch 2460800.5
nobs 1834
nopp 25
Years observed 1990-2025
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.599
ep 0.163
sin(ip) 0.219
G 0.150
H 14.620
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 16.061
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia -0.3100 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5990 0.1629 0.2194 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
14.62 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 0.811 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.8888 0.9330 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9770 0.9330 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT