Happelia

00578, 1899 KA, 1899KA, 1905 VJ, 1905VJ, 1958 HN, 1958HN, I99K00A, J05V00J, J58H00N

All data for this body: [vot]

MPC data

Name (number)	Happelia (578)
a	2.75092
e	0.19195
i / sin(i)	6.1495 / 0.10712
q	2.22287
Q	3.27897
ω	261.6003
Node	29.3701
m	41.8549
n	0.2160
Epoch	2460200.5

n_obs	7562
n_opp	57
Years observed	1905-2023
rms	0.45

Best values

	Value	Standard error
Parent

a_p	2.752
e_p	0.182
sin(i_p)	0.109

	Value	Standard error
G	0.150
H	9.590
Mass
D	67.15	0.839
pV	0.072	0.0029

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.7519	0.1823	0.1087	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Oct-2022

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
56.15	18.780	18.780	Nugent	2016AJ....152...63N	NEATM
60.06	18.650	18.650	Nugent	2016AJ....152...63N	NEATM
64.05	12.810	12.810	Ali-Lagoa	2018A&A...612A..85A	NEATM
64.58	1.120	1.120	Usui	2011PASJ...63.1117U	NEATM
67.21	3.580	3.580	Masiero	2012ApJ...759L...8M	NEATM
69.29	2.100	2.100	Tedesco	2002AJ....123.1056T	STM
69.82	6.980	6.980	Ali-Lagoa	2018A&A...612A..85A	NEATM
70.00	5.000	5.000	Hanus	2013A&A...551A..67H	LC
72.78	3.293	3.293	Ryan&Woodward	2010AJ....140..933R	IRAS-NEATM
73.23	2.549	2.549	Ryan&Woodward	2010AJ....140..933R	IRAS-STM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.064	0.0130	0.0130	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.068	0.0140	0.0140	Masiero	2012ApJ...759L...8M	NEATM
0.069	0.0048	0.0048	Ryan&Woodward	2010AJ....140..933R	IRAS-STM
0.070	0.0064	0.0064	Ryan&Woodward	2010AJ....140..933R	IRAS-NEATM
0.070	0.0500	0.0500	Nugent	2016AJ....152...63N	NEATM
0.076	0.0300	0.0300	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.077	0.0050	0.0050	Tedesco	2002AJ....123.1056T	STM
0.080	0.0700	0.0700	Nugent	2016AJ....152...63N	NEATM

G data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.15			MPC-2023-12-94	MPC-2023-12-94	Phot

H data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
9.59			MPC-2023-12-04	MPC-2023-12-04	Phot