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1673 van Houten (1937 TH)
Classification: Main-belt Asteroid          SPK-ID: 2001673
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1816958461737422 3.5136e-08  
a 3.100753280751755 1.2555e-08 au
q 2.537359289629558 1.1205e-07 au
i 3.589967747355215 4.3675e-06 deg
node 208.0268576263776 5.5877e-05 deg
peri 209.1719661299442 5.6962e-05 deg
M 22.3563464051559 1.0402e-05 deg
tp 2458876.649554196097
(2020-Jan-28.14955420)
5.7513e-05 TDB
period 1994.340205746791
5.46
1.2113e-05
3.316e-08
d
yr
n .1805108270708488 1.0964e-09 deg/d
Q 3.664147271873952 1.4837e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2490  
   data-arc span      30067 days (82.32 yr)  
   first obs. used      1937-10-11  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47284  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:01:35  

Additional Information
 Earth MOID = 1.55009 au 
 Jupiter MOID = 1.69645 au 
 T_jup = 3.193 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456589.5 (2013-Oct-24.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1764489913054078 3.4915e-08  
q 2.556122545254508 1.1067e-07 au
tp 2456879.699260137857
(2014-Aug-10.19926014)
6.0063e-05 TDB
node 208.224451984991 5.6211e-05 deg
peri 208.9392075187554 5.7372e-05 deg
i 3.573182295609997 4.3568e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2490  
   data-arc span      30067 days (82.32 yr)  
   first obs. used      1937-10-11  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47284  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:01:35  

Additional Information
 Jupiter MOID = 1.69645 au 
 T_jup = 3.193 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.219055210114261E-15 -3.847472870572565E-15 -4.576466330945715E-13 6.443660272813441E-15 -8.532876877630515E-14 -4.511340901969889E-16
q -3.847472870572565E-15 1.224680479530174E-14 1.339800769242848E-12 -2.209567371583469E-14 2.485294208650744E-13 1.782714640610879E-15
tp -4.576466330945715E-13 1.339800769242848E-12 3.607523690128327E-9 -3.986123897311653E-12 7.022604937416887E-10 8.011009027361632E-13
node 6.443660272813441E-15 -2.209567371583469E-14 -3.986123897311653E-12 3.159644947847897E-9 -3.154285422941456E-9 -3.539959863465618E-11
peri -8.532876877630515E-14 2.485294208650744E-13 7.022604937416887E-10 -3.154285422941456E-9 3.291573433513835E-9 3.546311891340211E-11
i -4.511340901969889E-16 1.782714640610879E-15 8.011009027361632E-13 -3.539959863465618E-11 3.546311891340211E-11 1.898200287390727E-11

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 12.2   n/a MPO502169  
diameter diameter 20.733 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.088   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1673 van Houten (1937 TH)          Discovered 1937-Oct-11 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1937 TH = 1948 TZ1 = 1950 BK = 1953 RJ1 = 1959 XG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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