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3603 Gajdusek (1981 RM)
Classification: Main-belt Asteroid          SPK-ID: 2003603
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 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1252490505757482 1.7556e-08  
a 2.569665893377749 1.0007e-08 au
q 2.247817679935304 4.7321e-08 au
i 5.228450984078234 5.8296e-07 deg
node 277.8903609935114 1.1947e-05 deg
peri 347.1744809689914 1.2576e-05 deg
M 257.9372917495158 1.033e-05 deg
tp 2459627.057914795905
(2022-Feb-16.55791480)
4.4166e-05 TDB
period 1504.573530908606
4.12
8.7892e-06
2.406e-08
d
yr
n .2392704594388269 1.3977e-09 deg/d
Q 2.891514106820194 1.1261e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2669  
   data-arc span      24106 days (66.00 yr)  
   first obs. used      1955-03-24  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43382  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:05:54  

Additional Information
 Earth MOID = 1.23054 au 
 Jupiter MOID = 2.18885 au 
 T_jup = 3.414 
[ 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 12.77   n/a E2021B10  
diameter diameter 7.612 km 0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.770 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 0.211   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3603 Gajdusek (1981 RM)          Discovered 1981-Sep-05 by Brozek, L. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 RM = 1976 JP = 1985 RC2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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