1998 EP9

1998EP9, 35475, J98E09P

All data for this body: [vot]

MPC data
Name (number) 1998 EP9 (35475)
a 2.43837
e 0.13761
i / sin(i) 3.3028 / 0.05761
q 2.10282
Q 2.77391
ω 86.5396
Node 111.5837
m 17.5751
n 0.2589
Epoch 2460800.5
nobs 2662
nopp 21
Years observed 1998-2025
rms 0.76
Best values
[raw, vot]

Value Standard error
Parent Nysa (44)
 
ap 2.437
ep 0.174
sin(ip) 0.043
G 0.150
H 15.080
Mass
D 2.31 0.145
pV 0.438 0.0780
Value
Rotational Period 4.900
Period quality 2-
Spectral Class S
Spectral Class Score 5.256
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
135 Hertha -1 Hertha -1.0000 Nesvorny 2024ApJS..274...25N HCM-2024
135 Hertha 0 Hertha Novakovic 2019EPSC...13.1671N HCM
44 Nysa 405 Nysa-Polana 0.1700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4369 0.1741 0.0434 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.31 0.145 0.145 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.438 0.0780 0.0780 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
15.08 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.96 2- Synodic Chang 2014ApJ...788...17C Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.876 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT