Rykerwatts

19663, 1977 UH4, 1977UH4, 1997 GU25, 1997GU25, 1998 KR40, 1998KR40, 1999 RU133, 1999RU133, J77U04H, J97G25U, J98K40R, J99RD3U

All data for this body: [vot]

MPC data
Name (number) Rykerwatts (19663)
a 2.72712
e 0.05672
i / sin(i) 8.4347 / 0.14668
q 2.57246
Q 2.88179
ω 246.1618
Node 208.9674
m 141.5599
n 0.2188
Epoch 2460800.5
nobs 2753
nopp 25
Years observed 1977-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.727
ep 0.068
sin(ip) 0.156
G 0.150
H 14.490
Mass
D 4.70 0.107
pV 0.201 0.0252
Value
Rotational Period 3.770
Period quality 2
Spectral Class D
Spectral Class Score 1.646
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7265 0.0675 0.1563 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.70 0.107 0.107 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.201 0.0252 0.0252 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
14.49 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.777 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
3.77736 2 Synodic Pal 2020ApJS..247...26P Lightcurve
3.77777 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
D D 0.2743 0.2743 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT