1999 JS121

1999JS121, 17154, 1982 BW11, 1982BW11, 1990 UG12, 1990UG12, 1998 FZ12, 1998FZ12, J82B11W, J90U12G, J98F12Z, J99JC1S

All data for this body: [vot]

MPC data
Name (number) 1999 JS121 (17154)
a 2.98149
e 0.08685
i / sin(i) 9.0381 / 0.15709
q 2.72254
Q 3.24045
ω 38.0348
Node 261.6186
m 326.7369
n 0.1914
Epoch 2460800.5
nobs 4478
nopp 25
Years observed 1982-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 2.982
ep 0.081
sin(ip) 0.176
G 0.150
H 12.510
Mass
D 10.44 0.100
pV 0.234 0.0232
Value
Rotational Period 2.892
Period quality 2
Spectral Class S
Spectral Class Score 22.122
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 0 Eos Novakovic 2019EPSC...13.1671N HCM
221 Eos 606 Eos -1.0200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9816 0.0809 0.1757 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.44 0.100 0.100 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.234 0.0232 0.0232 Masiero 2011ApJ...741...68M 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
12.51 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
2.89186 2 Synodic Pal 2020ApJS..247...26P Lightcurve
2.891979 2 Sidereal Durech 2020A&A...643A..59D Model
2.891981 2 Sidereal Durech 2018A&A...617A..57D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.53 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.9726 0.5180 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9994 0.5180 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X S 0.7683 0.5180 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X S 0.8139 0.5180 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
K DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.6039 0.5180 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.7777 0.5180 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT