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JPL Small-Body Database Browser
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3045 Alois (1984 AW)
Classification: Main-belt Asteroid          SPK-ID: 2003045
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1111931986836237 4.8427e-08  
a 3.133832695716996 1.6861e-08 au
q 2.785371814140901 1.55e-07 au
i 3.341002548855462 4.895e-06 deg
node 36.21346584352873 6.9745e-05 deg
peri 330.5758791264032 7.1511e-05 deg
M 227.8211990115486 1.6871e-05 deg
tp 2459344.497446620239
(2021-May-09.99744662)
9.7383e-05 TDB
period 2026.339161653369
5.55
1.6354e-05
4.477e-08
d
yr
n .1776602884712853 1.4338e-09 deg/d
Q 3.482293577293092 1.8736e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2230  
   data-arc span      25026 days (68.52 yr)  
   first obs. used      1951-02-04  
   last obs. used      2019-08-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44384  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:28:53  

Additional Information
 Earth MOID = 1.78385 au 
 Jupiter MOID = 1.97374 au 
 T_jup = 3.200 
[ 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 11.6   n/a MPO347545  
diameter diameter 27.493 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.753 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.059   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3045 Alois (1984 AW)          Discovered 1984-Jan-08 by Wagner, J. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1984 AW = 1954 QD = 1965 QD = 1971 SB3 = 1982 SY3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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