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7822 (1991 CS)
Classification: Apollo [NEO, PHA]          SPK-ID: 2007822
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 206 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1646713719876527 1.6911e-08  
a 1.1229303584813 5.2609e-10 au
q .9380158757035975 1.8735e-08 au
i 37.12217795876189 1.4907e-06 deg
node 156.8514297649396 1.832e-06 deg
peri 249.4247566132532 7.2459e-06 deg
M 264.8523527618885 1.0109e-05 deg
tp 2459511.374389038993
(2021-Oct-23.87438904)
1.2277e-05 TDB
period 434.6379679840641
1.19
3.0544e-07
8.362e-10
d
yr
n .8282755454378512 5.8207e-10 deg/d
Q 1.307844841259002 6.1272e-10 au
  Orbit Determination Parameters
   # obs. used (total)      1255  
   # delay obs. used      0  
   # Doppler obs. used      4  
   data-arc span      11107 days (30.41 yr)  
   first obs. used      1991-01-19  
   last obs. used      2021-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-18 06:41:21  

Additional Information
 Earth MOID = .0222856 au 
 Jupiter MOID = 3.95747 au 
 T_jup = 5.364 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456362.5 (2013-Mar-11.0) TDB
Reference: JPL 206 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1646342257140089 1.6952e-08  
q .93789330361378 1.8729e-08 au
tp 2456469.250426418441
(2013-Jun-25.75042642)
1.031e-05 TDB
node 156.876144527143 1.8317e-06 deg
peri 249.4528389356396 7.2226e-06 deg
i 37.12061817060008 1.4907e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1255  
   # delay obs. used      0  
   # Doppler obs. used      4  
   data-arc span      11107 days (30.41 yr)  
   first obs. used      1991-01-19  
   last obs. used      2021-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-18 06:41:21  

Additional Information
 Jupiter MOID = 3.95747 au 
 T_jup = 5.364 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.873772685712863E-16 -3.174306520053042E-16 7.931913708722148E-14 3.322370178531109E-15 6.019154108519548E-14 3.841253836552203E-15
q -3.174306520053042E-16 3.507661210515441E-16 -8.472908559783977E-14 -3.472117919748135E-15 -6.476968872059862E-14 -4.097635140887718E-15
tp 7.931913708722148E-14 -8.472908559783977E-14 1.062864487943361E-10 -2.879824372768391E-13 7.283918187298476E-11 2.158881169513318E-12
node 3.322370178531109E-15 -3.472117919748135E-15 -2.879824372768391E-13 3.355024869746375E-12 -2.300755182090978E-12 1.431496867291795E-12
peri 6.019154108519548E-14 -6.476968872059862E-14 7.283918187298476E-11 -2.300755182090978E-12 5.216589706155784E-11 6.577373492078607E-13
i 3.841253836552203E-15 -4.097635140887718E-15 2.158881169513318E-12 1.431496867291795E-12 6.577373492078607E-13 2.222100132914644E-12

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 17.33   n/a E2021B10  
diameter diameter 1.602 km 0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 2.3896 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) Icarus 136, 124-153.]
[Krugly, Yu.N.; Bel'skaya, I.N.; Shevchenko, V.G.; et al. (2002) Icarus 158, 294-304.]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Klinglesmith III, D.A.; Hendrickx, S.; Madden, K.; Montgomery, S. (2016) Minor Planet Bull. 43, 234-239.]
[Warner, B.D. (2016) Minor Planet Bull. 43, 66-79.]
[Warner, B.D. (2016) Minor Planet Bull. 43, 240-250.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.075   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
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)

7822 (1991 CS)          Discovered 1991-Feb-13 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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