2001 HM21

2001HM21, 2000 CC17, 2000CC17, 51595, K00C17C, K01H21M

All data for this body: [vot]

MPC data
Name (number) 2001 HM21 (51595)
a 2.30626
e 0.25927
i / sin(i) 6.9865 / 0.12164
q 1.70832
Q 2.90420
ω 313.9251
Node 43.2368
m 190.4873
n 0.2814
Epoch 2460800.5
nobs 2282
nopp 20
Years observed 1994-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.307
ep 0.212
sin(ip) 0.108
G 0.150
H 15.240
Mass
D 2.35 0.545
pV 0.222 0.0842
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 2.874
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3074 0.2117 0.1076 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.35 0.545 0.545 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.222 0.0842 0.0842 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
15.24 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 0.479 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT