1999 GN21

1999GN21, 2000 QA91, 2000QA91, 38075, J99G21N, K00Q91A

All data for this body: [vot]

MPC data
Name (number) 1999 GN21 (38075)
a 3.06691
e 0.25268
i / sin(i) 6.1408 / 0.10697
q 2.29197
Q 3.84186
ω 47.3036
Node 200.8630
m 275.1531
n 0.1835
Epoch 2460800.5
nobs 2302
nopp 26
Years observed 1983-2025
rms 0.79
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.078
ep 0.277
sin(ip) 0.112
G 0.150
H 13.880
Mass
D 4.99 0.062
pV 0.229 0.0234
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 0.618
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0776 0.2770 0.1124 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.99 0.062 0.062 Masiero 2011ApJ...741...68M NEATM
6.14 1.690 1.690 Nugent 2016AJ....152...63N NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.110 0.0700 0.0700 Nugent 2016AJ....152...63N NEATM
0.244 0.0248 0.0248 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
13.88 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 0.103 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT