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3311 Podobed (1976 QM1)
Classification: Main-belt Asteroid          SPK-ID: 2003311
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04053492400295316 2.1853e-08  
a 2.788723486742405 1.0902e-08 au
q 2.675682792142051 6.3196e-08 au
i .931193826724251 4.6847e-07 deg
node 157.3233158057637 5.5412e-05 deg
peri 9.145500774468132 6.1697e-05 deg
M 9.249864902421221 2.6928e-05 deg
tp 2459156.794157399584
(2020-Nov-03.29415740)
0.00012729 TDB
period 1701.008987929233
4.66
9.9748e-06
2.731e-08
d
yr
n .2116390933584985 1.2411e-09 deg/d
Q 2.901764181342759 1.1344e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2949  
   data-arc span      24198 days (66.25 yr)  
   first obs. used      1954-12-22  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45797  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:53:15  

Additional Information
 Earth MOID = 1.68158 au 
 Jupiter MOID = 2.06105 au 
 T_jup = 3.329 
[ 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 12.36   n/a E2021B10  
diameter diameter 17.336 km 0.292 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.039   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B T   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)

3311 Podobed (1976 QM1)          Discovered 1976-Aug-26 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1976 QM1 = 1974 EL = 1979 HN2 = 1981 SB5 = 1983 AW1 = 1984 SP = 1985 PD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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