1999 XK121

1999XK121, 2001 FP159, 2001FP159, 43158, J99XC1K, K01FF9P

All data for this body: [vot]

MPC data
Name (number) 1999 XK121 (43158)
a 2.37881
e 0.20217
i / sin(i) 2.6499 / 0.04623
q 1.89788
Q 2.85973
ω 9.9530
Node 28.6603
m 351.5846
n 0.2686
Epoch 2460800.5
nobs 2064
nopp 20
Years observed 1997-2024
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent Nysa (44)
 
ap 2.379
ep 0.180
sin(ip) 0.040
G 0.150
H 15.130
Mass
D 2.80 0.170
pV 0.270 0.0450
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 12.891
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
135 Hertha 0 Hertha Novakovic 2019EPSC...13.1671N HCM
44 Nysa 405 Nysa-Polana -0.4800 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3790 0.1796 0.0395 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.80 0.170 0.170 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.270 0.0450 0.0450 Masiero 2012ApJ...759L...8M 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
15.13 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 DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.783 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S 0.88 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.7389 0.7389 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT