1991 HC

1991HC, 08854, J91H00C

All data for this body: [vot]

MPC data
Name (number) 1991 HC (8854)
a 2.26815
e 0.14483
i / sin(i) 4.6631 / 0.08130
q 1.93965
Q 2.59665
ω 185.4505
Node 88.6660
m 297.7722
n 0.2885
Epoch 2460800.5
nobs 3882
nopp 24
Years observed 1954-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent Flora (8)
 
ap 2.268
ep 0.133
sin(ip) 0.068
G 0.150
H 13.960
Mass
D 3.66 0.183
pV 0.406 0.0303
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 21.035
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
8 Flora 402 Flora 0.6200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2685 0.1331 0.0679 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.12 0.470 0.470 Nugent 2016AJ....152...63N NEATM
3.76 0.199 0.199 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.300 0.1100 0.1100 Nugent 2016AJ....152...63N NEATM
0.414 0.0315 0.0315 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
13.96 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 0.960 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.9995 1.0000 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9996 1.0000 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S 0.64 Bus VIS Carvano 2010A&A...510A..43C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT