1999 JO38

1999JO38, 1991 PQ20, 1991PQ20, 1996 TZ59, 1996TZ59, 28380, J91P20Q, J96T59Z, J99J38O

All data for this body: [vot]

MPC data
Name (number) 1999 JO38 (28380)
a 2.80877
e 0.13693
i / sin(i) 8.5608 / 0.14886
q 2.42415
Q 3.19338
ω 245.3457
Node 203.7935
m 312.2241
n 0.2094
Epoch 2460800.5
nobs 3751
nopp 25
Years observed 1991-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.811
ep 0.132
sin(ip) 0.159
G 0.150
H 13.330
Mass
D 6.17 0.343
pV 0.243 0.0354
Value
Rotational Period 22.480
Period quality 2
Spectral Class S
Spectral Class Score 3.980
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1272 Gefion 0 Gefion Novakovic 2019EPSC...13.1671N HCM
1272 Gefion 516 Gefion 0.8600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8111 0.1317 0.1588 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.17 0.343 0.343 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.243 0.0354 0.0354 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
13.33 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
22.484 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
A 0.325 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.99 Bus VIS Carvano 2010A&A...510A..43C PHOT