1997 JA

1997JA, 09444, 1991 ET8, 1991ET8, 1998 MQ33, 1998MQ33, J91E08T, J97J00A, J98M33Q

All data for this body: [vot]

MPC data
Name (number) 1997 JA (9444)
a 3.13829
e 0.08665
i / sin(i) 2.2951 / 0.04005
q 2.86634
Q 3.41023
ω 80.2170
Node 84.4768
m 56.1643
n 0.1773
Epoch 2460800.5
nobs 4143
nopp 26
Years observed 1991-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.136
ep 0.122
sin(ip) 0.021
G 0.150
H 13.140
Mass
D 13.61 0.312
pV 0.066 0.0122
Value
Rotational Period 15.310
Period quality 2
Spectral Class C
Spectral Class Score 5.907
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
2458 Veniakaverin -1 Veniakaverin -1.0000 Nesvorny 2024ApJS..274...25N HCM-2024
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
24 Themis 602 Themis 0.0000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1358 0.1216 0.0205 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.61 0.312 0.312 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.066 0.0122 0.0122 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
13.14 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
15.3096 2 Sidereal Durech 2023A&A...675A..24D Model
15.3099 2 Sidereal Durech 2019A&A...631A...2D Model
15.30992 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 DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.85 Bus VIS Carvano 2010A&A...510A..43C PHOT
C Bk None None Movis NIR Popescu 2018A&A...617A..12P PHOT
C C 0.2012 0.2012 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT