2001 NO21

2001NO21, 1984 SO7, 1984SO7, 54838, J84S07O, K01N21O

All data for this body: [vot]

MPC data
Name (number) 2001 NO21 (54838)
a 2.63779
e 0.22491
i / sin(i) 6.3668 / 0.11089
q 2.04453
Q 3.23105
ω 245.5154
Node 188.6384
m 126.5101
n 0.2301
Epoch 2460800.5
nobs 1611
nopp 23
Years observed 1984-2025
rms 0.84
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.637
ep 0.212
sin(ip) 0.116
G 0.150
H 15.290
Mass
D 5.20 0.698
pV 0.048 0.0166
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 2.061
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6367 0.2116 0.1160 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.65 1.090 1.090 Nugent 2016AJ....152...63N NEATM
4.65 1.370 1.370 Masiero 2021PSJ.....2..162M NEATM
6.09 1.430 1.430 Masiero 2012ApJ...759L...8M NEATM
6.84 2.290 2.290 Masiero 2020PSJ.....1....5M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.031 0.0360 0.0360 Masiero 2020PSJ.....1....5M NEATM
0.046 0.2580 0.2580 Masiero 2012ApJ...759L...8M NEATM
0.050 0.0200 0.0200 Nugent 2016AJ....152...63N NEATM
0.068 0.0350 0.0740 Masiero 2021PSJ.....2..162M 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
15.29 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 S 0.3435 0.3435 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X 0.275 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT