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JPL Small-Body Database Browser
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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 ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07101324258673236 3.7139e-08  
a 2.344948751596495 5.5514e-09 au
q 2.178426337045918 8.6205e-08 au
i 6.069625322865638 3.6148e-06 deg
node 134.8951881246982 3.7324e-05 deg
peri 84.55435714864504 4.5087e-05 deg
M 100.8879829923896 2.5382e-05 deg
tp 2458232.933943286643
(2018-Apr-24.43394329)
9.2388e-05 TDB
period 1311.591098285612
3.59
4.6576e-06
1.275e-08
d
yr
n .2744757878202727 9.7469e-10 deg/d
Q 2.511471166147072 5.9456e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2921  
   data-arc span      46638 days (127.69 yr)  
   first obs. used      1892-03-19  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47754  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:07:21  

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 10.03   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 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.DBLast Updated: 2003-08-29

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Alternate Designations
 A899 CA = A892 FA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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