1998 VP20

1998VP20, 13795, 1991 PH4, 1991PH4, 1996 LF1, 1996LF1, J91P04H, J96L01F, J98V20P

All data for this body: [vot]

MPC data
Name (number) 1998 VP20 (13795)
a 3.17224
e 0.14247
i / sin(i) 2.1671 / 0.03782
q 2.72030
Q 3.62417
ω 82.6643
Node 146.0933
m 59.4337
n 0.1744
Epoch 2460800.5
nobs 3017
nopp 25
Years observed 1991-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.182
ep 0.157
sin(ip) 0.028
G 0.150
H 13.500
Mass
D 12.06 0.150
pV 0.064 0.0118
Value
Rotational Period 258.000
Period quality 2
Spectral Class C
Spectral Class Score 6.766
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
24 Themis 602 Themis 0.4400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1816 0.1573 0.0281 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
12.06 0.150 0.150 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.064 0.0118 0.0118 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
13.50 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
258.9 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
B B 0.6810 0.5350 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.71 Bus VIS Carvano 2010A&A...510A..43C PHOT
C B 0.5577 0.5350 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT