Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
442 Eichsfeldia (A899 CA)
Classification: Main-belt Asteroid          SPK-ID: 2000442
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 55 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07048181482041564 1.728e-08  
a 2.345571648411101 4.8433e-09 au
q 2.180251501839773 3.964e-08 au
i 6.069823951224641 2.6663e-07 deg
node 134.8883634792298 2.1083e-06 deg
peri 84.53968574093628 1.3088e-05 deg
M 319.3200566748903 1.4003e-05 deg
tp 2459544.768645678627
(2021-Nov-26.26864568)
5.1141e-05 TDB
period 1312.113736681606
3.59
4.064e-06
1.113e-08
d
yr
n .2743664591992277 8.498e-10 deg/d
Q 2.51089179498243 5.1847e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3822  
   data-arc span      47199 days (129.22 yr)  
   first obs. used      1892-03-19  
   last obs. used      2021-06-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43144  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:04:00  

Additional Information
 Earth MOID = 1.18305 au 
 Jupiter MOID = 2.46737 au 
 T_jup = 3.550 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.99   n/a MPCxxxxx 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. 2020-October); 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.DBLast Updated: 2003-08-29

Alternate Designations
 A899 CA = A892 FA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-03 18:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin