JPL Small-Body Database Browser

+ View the NASA Portal
+ Center for Near-Earth Object Studies

JPL Home

Earth

Solar System

Stars & Galaxies

Technology

JPL Solar System Dynamics

IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.

442 Eichsfeldia (A899 CA)

Classification: Main-belt Asteroid SPK-ID: 2000442

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)

Element	Value	Uncertainty (1-sigma)	Units
e	.0710132424417043	3.7122e-08
a	2.344948751674594	5.5406e-09	au
q	2.178426337458554	8.6156e-08	au
i	6.06962526392695	3.6005e-06	deg
node	134.8951883792774	3.7301e-05	deg
peri	84.55435658125445	4.501e-05	deg
M	100.8879832410077	2.5313e-05	deg
t_p	2458232.933942362488 (2018-Apr-24.43394236)	9.2133e-05	TDB
period	1311.591098351136 3.59	4.6485e-06 1.273e-08	d yr
n	.2744757878065605	9.7278e-10	deg/d
Q	2.511471165890634	5.934e-09	au

Orbit Determination Parameters

# obs. used (total)	2953
data-arc span	46644 days (127.70 yr)
first obs. used	1892-03-19
last obs. used	2019-12-03
planetary ephem.	DE431
SB-pert. ephem.	SB431-N16
condition code	0
norm. resid. RMS	.47516
source	ORB
producer	Otto Matic
solution date	2019-Dec-13 20:43:15

Additional Information

Earth MOID = 1.18081 au

Jupiter MOID = 2.47004 au

T_jup = 3.551

[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table

Parameter	Symbol	Value	Units	Sigma	Reference	Notes
absolute magnitude	H	10.0		n/a	MPO502157	IRAS observations used: 17
diameter	diameter	62.171	km	1.181	urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)
rotation period	rot_per	11.871	h	n/a	LCDB (Rev. 2019-January); Warner et al., 2009	Published Reference List: [Koff, R.A.; Brincat, S.F. (2000) Minor Planet Bull. 27, 49-51.] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo	albedo	0.044		0.004	urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)
B-V	BV	0.692		0.020	EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2	#obs=2; phase (min.=14.65, mean=16.22, max.=17.79) deg.
U-B	UB	0.331		0.028	EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2	#obs=2; phase (min.=14.65, mean=16.22, max.=17.79) deg.
Tholen spectral type	spec_T	C		n/a	EAR-A-5-DDR-TAXONOMY-V4.0	used 7 color indices
SMASSII spectral type	spec_B	Ch		n/a	EAR-A-5-DDR-TAXONOMY-V4.0	based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

442 Eichsfeldia (A899 CA) Discovered 1899-Feb-15 by Wolf, M. and Schwassmann, A. at Heidelberg
Reference: DISCOVERY.DB	Last Updated: 2003-08-29

[ show close-approach data ]

Alternate Designations

A899 CA = A892 FA

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

PRIVACY/COPYRIGHT

2020-Jan-21 11:37 UT
(server date/time)

Site Manager:	Ryan S. Park
Webmaster:	Alan B. Chamberlin