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379 Huenna (A894 AA)
Classification: Main-belt Asteroid          SPK-ID: 2000379
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1798824348425847 3.3042e-08  
a 3.140951270103411 9.3638e-09 au
q 2.5759493079153 1.0297e-07 au
i 1.670076802962886 3.6986e-06 deg
node 171.8827496038896 0.00012291 deg
peri 180.5452698289534 0.00012331 deg
M 48.62256439700917 1.0051e-05 deg
tp 2458925.884159826647
(2020-Mar-17.38415983)
5.6571e-05 TDB
period 2033.24739631561
5.57
9.0922e-06
2.489e-08
d
yr
n .1770566634696524 7.9176e-10 deg/d
Q 3.705953232291522 1.1048e-08 au
  Orbit Determination Parameters
   # obs. used (total)      4312  
   data-arc span      46393 days (127.02 yr)  
   first obs. used      1894-01-10  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41679  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:46:03  

Additional Information
 Earth MOID = 1.56885 au 
 Jupiter MOID = 1.73463 au 
 T_jup = 3.185 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456009.5 (2012-Mar-23.0) TDB
Reference: JPL 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870215404066029 3.3428e-08  
q 2.549968081865558 1.0532e-07 au
tp 2456889.651662887654
(2014-Aug-20.15166289)
5.2409e-05 TDB
node 172.0581243712641 0.0001227 deg
peri 179.9392357228171 0.00012305 deg
i 1.669436451962665 3.7146e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      4312  
   data-arc span      46393 days (127.02 yr)  
   first obs. used      1894-01-10  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41679  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:46:03  

Additional Information
 Jupiter MOID = 1.73463 au 
 T_jup = 3.185 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.117426853685952E-15 -3.511524278735936E-15 1.62998016031795E-13 1.002599296813942E-15 4.190132892426625E-15 -2.386155518390333E-17
q -3.511524278735936E-15 1.109176471918828E-14 -5.181832734071077E-13 9.669112054392416E-17 -2.254096306927942E-14 1.185557496588324E-16
tp 1.62998016031795E-13 -5.181832734071077E-13 2.746710778942666E-9 -2.836084677234572E-12 4.997203878907521E-10 -7.656237042325392E-14
node 1.002599296813942E-15 9.669112054392416E-17 -2.836084677234572E-12 1.505438249695505E-8 -1.504854324721087E-8 2.677177879012449E-11
peri 4.190132892426625E-15 -2.254096306927942E-14 4.997203878907521E-10 -1.504854324721087E-8 1.514063451906087E-8 -2.677564536027247E-11
i -2.386155518390333E-17 1.185557496588324E-16 -7.656237042325392E-14 2.677177879012449E-11 -2.677564536027247E-11 1.379804297780203E-11

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 8.99   n/a E2021B10 IRAS observations used: 18
diameter diameter 84.787 km 1.558 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.141 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2010) Minor Planet Bull. 37, 112-118.]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.046   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.672   0.059 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.89, mean=11.84, max.=19.79) deg.
U-B UB 0.287   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.89, mean=11.84, max.=19.79) deg.
Tholen spectral type spec_T B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   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)

379 Huenna (A894 AA)          Discovered 1894-Jan-08 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A894 AA = 1948 XM = A895 DB = A911 BA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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