1999 XJ221

1999XJ221, 1992 UC11, 1992UC11, 1998 XD75, 1998XD75, 25583, J92U11C, J98X75D, J99XM1J

All data for this body: [vot]

MPC data
Name (number) 1999 XJ221 (25583)
a 3.02584
e 0.03428
i / sin(i) 9.1824 / 0.15958
q 2.92212
Q 3.12956
ω 18.7710
Node 240.3594
m 191.4167
n 0.1873
Epoch 2460800.5
nobs 4086
nopp 24
Years observed 1981-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 3.020
ep 0.070
sin(ip) 0.179
G 0.150
H 12.450
Mass
D 12.24 0.235
pV 0.155 0.0306
Value
Rotational Period 10.550
Period quality 2
Spectral Class X
Spectral Class Score 11.751
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 -0.1300 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0197 0.0704 0.1788 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
12.24 0.235 0.235 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.155 0.0306 0.0306 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
12.45 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
10.5434 2 Sidereal Durech 2023A&A...675A..24D Model
10.547 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
10.554 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
K X 0.6014 0.4690 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L 0.80 Bus VIS Carvano 2010A&A...510A..43C PHOT
S 0.606 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
X X 0.3965 0.4690 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.7495 0.4690 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X X 0.8125 0.4690 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT