1999 XJ18

1999XJ18, 2001 FF28, 2001FF28, A2906, J99X18J, K01F28F

All data for this body: [vot]

MPC data
Name (number) 1999 XJ18 (102906)
a 2.40954
e 0.16847
i / sin(i) 3.3343 / 0.05816
q 2.00359
Q 2.81548
ω 10.9730
Node 33.6885
m 279.9919
n 0.2635
Epoch 2460800.5
nobs 1686
nopp 18
Years observed 1999-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent Nysa (44)
 
ap 2.409
ep 0.150
sin(ip) 0.050
G 0.150
H 15.530
Mass
D 4.74 0.155
pV 0.062 0.0117
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 1.769
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
44 Nysa 405 Nysa-Polana -0.1200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4093 0.1503 0.0495 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.22 0.830 0.830 Masiero 2020PSJ.....1....5M NEATM
3.67 0.710 0.710 Masiero 2021PSJ.....2..162M NEATM
3.95 0.900 0.900 Nugent 2016AJ....152...63N NEATM
4.39 1.190 1.190 Masiero 2012ApJ...759L...8M NEATM
4.90 0.166 0.166 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.056 0.0138 0.0138 Masiero 2011ApJ...741...68M NEATM
0.070 0.0310 0.0310 Masiero 2012ApJ...759L...8M NEATM
0.070 0.0500 0.0500 Nugent 2016AJ....152...63N NEATM
0.091 0.0340 0.0530 Masiero 2021PSJ.....2..162M NEATM
0.129 0.1330 0.1330 Masiero 2020PSJ.....1....5M 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
15.53 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
B B 0.1298 0.0870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C 0.12 Bus VIS Carvano 2010A&A...510A..43C PHOT
C 0.188 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C B 0.0669 0.0870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT