1999 NP9

1999NP9, 1998 KY2, 1998KY2, 70135, J98K02Y, J99N09P

All data for this body: [vot]

MPC data
Name (number) 1999 NP9 (70135)
a 2.32994
e 0.22205
i / sin(i) 2.9695 / 0.05180
q 1.81257
Q 2.84731
ω 127.9544
Node 272.5353
m 28.1975
n 0.2771
Epoch 2460800.5
nobs 1668
nopp 19
Years observed 1998-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.329
ep 0.201
sin(ip) 0.069
G 0.150
H 15.790
Mass
D 1.76 0.463
pV 0.248 0.1068
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 13.843
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3295 0.2008 0.0690 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.76 0.463 0.463 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.248 0.1068 0.1068 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
15.79 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
S 0.37 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.3069 0.9400 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9079 0.9400 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9691 0.9400 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT