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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1082073197344268 1.6032e-08  
a 3.13453568770571 1.3902e-08 au
q 2.795355982327167 5.2106e-08 au
i 3.332739426486074 5.2344e-07 deg
node 35.97367555585826 8.8535e-06 deg
peri 330.3638140863 1.2538e-05 deg
M 334.5134547779343 8.3016e-06 deg
tp 2459344.004897829904
(2021-May-09.50489783)
4.6765e-05 TDB
period 2027.02103280903
5.55
1.3485e-05
3.692e-08
d
yr
n .1776005251909571 1.1815e-09 deg/d
Q 3.473715393084253 1.5407e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2705  
   data-arc span      25530 days (69.90 yr)  
   first obs. used      1951-02-04  
   last obs. used      2020-12-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41392  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:37:06  

Additional Information
 Earth MOID = 1.79299 au 
 Jupiter MOID = 1.986 au 
 T_jup = 3.201 
[ 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 11.68   n/a E2020-QM5  
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. 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:
[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

[ show close-approach data ]
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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