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3376 Armandhammer (1982 UJ8)
Classification: Main-belt Asteroid          SPK-ID: 2003376
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06589167772704346 3.8529e-08  
a 2.34858084101126 7.3355e-09 au
q 2.193828909119437 9.2789e-08 au
i 6.347512467715498 3.4869e-06 deg
node 250.0615220199185 3.7511e-05 deg
peri 328.7024540711917 4.8049e-05 deg
M 24.97937180593429 3.0816e-05 deg
tp 2459109.280915547830
(2020-Sep-16.78091555)
0.00011244 TDB
period 1314.639561711467
3.60
6.1592e-06
1.686e-08
d
yr
n .2738393172432244 1.283e-09 deg/d
Q 2.503332772903083 7.8189e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2514  
   data-arc span      24439 days (66.91 yr)  
   first obs. used      1953-09-16  
   last obs. used      2020-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40355  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:00:50  

Additional Information
 Earth MOID = 1.18639 au 
 Jupiter MOID = 2.48394 au 
 T_jup = 3.548 
[ 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 12.5   n/a MPO502185  
diameter diameter 7.894 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.916 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2009) http://www.asu.cas.cz/~ppravec/neo.htm]
[Stephens, R.D. (2016) Minor Planet Bull. 43, 252-255.]
geometric albedo albedo 0.212   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Sq   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)

3376 Armandhammer (1982 UJ8)          Discovered 1982-Oct-21 by Zhuravleva, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1982 UJ8 = 1952 HP3 = 1975 XF1 = 1978 PJ4 = 1978 SZ1 = 1982 TN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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