1999 VH21

1999VH21, 44904, J99V21H

All data for this body: [vot]

MPC data
Name (number) 1999 VH21 (44904)
a 2.69944
e 0.17081
i / sin(i) 11.1245 / 0.19294
q 2.23835
Q 3.16052
ω 224.7086
Node 209.4259
m 238.8390
n 0.2222
Epoch 2460800.5
nobs 2179
nopp 21
Years observed 1997-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent Adeona (145)
 
ap 2.699
ep 0.170
sin(ip) 0.202
G 0.150
H 14.540
Mass
D 7.88 0.069
pV 0.061 0.0105
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 5.550
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
145 Adeona 0 Adeona Novakovic 2019EPSC...13.1671N HCM
145 Adeona 505 Adeona 0.5300 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6985 0.1695 0.2015 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.43 1.040 1.040 Masiero 2020PSJ.....1....5M NEATM
6.02 1.800 1.800 Masiero 2020PSJ.....1....5M NEATM
7.89 0.069 0.069 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.059 0.0108 0.0108 Masiero 2011ApJ...741...68M NEATM
0.077 0.0770 0.0770 Masiero 2020PSJ.....1....5M NEATM
0.095 0.0530 0.0530 Masiero 2020PSJ.....1....5M 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
14.54 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
C 0.925 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT