Johngenereid

19638, 1998 HK121, 1998HK121, 1999 RH57, 1999RH57, J98HC1K, J99R57H

All data for this body: [vot]

MPC data
Name (number) Johngenereid (19638)
a 2.75531
e 0.03814
i / sin(i) 5.7598 / 0.10036
q 2.65023
Q 2.86039
ω 152.1419
Node 136.2459
m 260.5810
n 0.2155
Epoch 2460800.5
nobs 2568
nopp 22
Years observed 1996-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent Hoffmeister (1726)
 
ap 2.756
ep 0.051
sin(ip) 0.089
G 0.150
H 14.760
Mass
D 5.75 0.171
pV 0.093 0.0145
Value
Rotational Period 129.800
Period quality 2
Spectral Class C
Spectral Class Score 2.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1726 Hoffmeister 519 Hoffmeister -2.1600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7563 0.0509 0.0892 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.75 0.171 0.171 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.093 0.0145 0.0145 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
14.76 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
129.804 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
X 0.22 Bus VIS Carvano 2010A&A...510A..43C PHOT
X X 0.2253 0.2253 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT