Callahan

19741, 1978 RQ8, 1978RQ8, 2000 AN141, 2000AN141, J78R08Q, K00AE1N

All data for this body: [vot]

MPC data
Name (number) Callahan (19741)
a 2.24716
e 0.13047
i / sin(i) 8.0497 / 0.14003
q 1.95397
Q 2.54035
ω 227.2266
Node 167.3318
m 87.3791
n 0.2926
Epoch 2460200.5
nobs 2624
nopp 23
Years observed 1978-2023
rms 0.55
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.248
ep 0.125
sin(ip) 0.146
Value Standard error
G 0.150
H 14.640
Mass
D 3.88 0.166
pV 0.224 0.0439
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2475 0.1252 0.1458 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.88 0.166 0.166 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.224 0.0439 0.0439 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
14.64 MPC-2023-12-04 MPC-2023-12-04 Phot