Protos

1977 RN, 1977RN, 2001 SK109, 2001SK109, 52228, J77R00N, K01SA9K

All data for this body: [vot]

MPC data
Name (number) Protos (52228)
a 3.20844
e 0.12582
i / sin(i) 27.9009 / 0.46794
q 2.80474
Q 3.61215
ω 331.7230
Node 48.1719
m 70.5721
n 0.1715
Epoch 2460800.5
nobs 2423
nopp 21
Years observed 1977-2025
rms 0.70
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.213
ep 0.134
sin(ip) 0.450
G 0.150
H 13.600
Mass
D 5.59 1.622
pV 0.271 0.1763
Value
Rotational Period 4.615
Period quality 2
Spectral Class A
Spectral Class Score 18.260
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.2130 0.1335 0.4501 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.59 1.622 1.622 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.271 0.1763 0.1763 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
13.60 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.61554 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
A Bus-DeMeo NIR DeMeo 2019Icar..322...13D SPEC
A 0.13 Bus VIS Carvano 2010A&A...510A..43C PHOT
U DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT