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3813 Fortov (1970 QA1)
Classification: Main-belt Asteroid          SPK-ID: 2003813
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .175777057713416 1.4729e-08  
a 2.191253976380334 5.5842e-09 au
q 1.806081799709375 3.2873e-08 au
i 4.157784107897172 7.4091e-07 deg
node 319.7825571451259 1.1563e-05 deg
peri 349.5825247417327 1.2591e-05 deg
M 217.4611986677881 5.1996e-06 deg
tp 2459669.602885360028
(2022-Mar-31.10288536)
1.7801e-05 TDB
period 1184.779422523781
3.24
4.529e-06
1.24e-08
d
yr
n .3038540281473989 1.1615e-09 deg/d
Q 2.576426153051292 6.5658e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2492  
   data-arc span      24228 days (66.33 yr)  
   first obs. used      1954-11-23  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47315  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:13:24  

Additional Information
 Earth MOID = .789752 au 
 Jupiter MOID = 2.67476 au 
 T_jup = 3.649 
[ 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 13.60   n/a MPCxxxxx  
diameter diameter 5.108 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.3 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.324   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B S   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)

3813 Fortov (1970 QA1)          Discovered 1970-Aug-30 by Smirnova, T. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1970 QA1 = 1934 NJ = 1960 OD = 1986 PL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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