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2353 Alva (1975 UD)
Classification: Main-belt Asteroid          SPK-ID: 2002353
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1135624070982927 4.1365e-08  
a 2.803456949430954 1.1668e-08 au
q 2.485089630057138 1.1776e-07 au
i 4.796661569853833 4.4322e-06 deg
node 24.63790001261081 4.4404e-05 deg
peri 301.27124701 4.7234e-05 deg
M 270.4417966432887 1.7755e-05 deg
tp 2459627.022686178061
(2022-Feb-16.52268618)
8.5372e-05 TDB
period 1714.507005154157
4.69
1.0703e-05
2.93e-08
d
yr
n .2099728953674536 1.3108e-09 deg/d
Q 3.12182426880477 1.2993e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3004  
   data-arc span      19834 days (54.30 yr)  
   first obs. used      1966-11-12  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42667  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:40:54  

Additional Information
 Earth MOID = 1.47585 au 
 Jupiter MOID = 2.19784 au 
 T_jup = 3.309 
[ 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 11.65   n/a E2021B10  
diameter diameter 12.564 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 62.6 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Rowe, B. (2018) Minor Planet Bull. 45, 203-207.]
geometric albedo albedo 0.213   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B S   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)

2353 Alva (1975 UD)          Discovered 1975-Oct-27 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1975 UD = 1926 GA = 1966 VG = 1970 SG1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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