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JPL Small-Body Database Browser
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3223 Forsius (1942 RN)
Classification: Main-belt Asteroid          SPK-ID: 2003223
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1436117358249973 3.177e-08  
a 2.60596602024684 9.9183e-09 au
q 2.231718716578231 8.4414e-08 au
i 10.06343535611869 4.3172e-06 deg
node 168.1692402745477 2.4352e-05 deg
peri 293.439828233359 3.0391e-05 deg
M 77.80319823939116 1.7459e-05 deg
tp 2458668.417110885307
(2019-Jul-03.91711089)
7.431e-05 TDB
period 1536.567169301306
4.21
8.7722e-06
2.402e-08
d
yr
n .2342884887770288 1.3375e-09 deg/d
Q 2.980213323915449 1.1343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2273  
   data-arc span      28243 days (77.33 yr)  
   first obs. used      1942-09-07  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46576  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:58:03  

Additional Information
 Earth MOID = 1.27028 au 
 Jupiter MOID = 2.19927 au 
 T_jup = 3.376 
[ 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 11.3   n/a MPO458861  
diameter diameter 20.149 km 1.326 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.343 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Koff, R.A. (2004) Minor Planet Bull. 31, 58-60.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Liu, J. (2016) Minor Planet Bull. 43, 299.]
geometric albedo albedo 0.845   0.248 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3223 Forsius (1942 RN)          Discovered 1942-Sep-07 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1942 RN = 1932 HN = 1934 VP = 1940 GS = 1951 YB1 = 1957 JC = 1967 RC = 1979 OU14 = 1980 RD5 = 1982 DA3 = 1982 DK6 = A915 GD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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