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7997 (1985 CN1)
Classification: Main-belt Asteroid          SPK-ID: 2007997
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09908225080870002 2.1233e-08  
a 2.299414850694356 6.2669e-09 au
q 2.071583651744608 4.9311e-08 au
i 3.170245099470138 7.7588e-07 deg
node 12.88883791779737 1.792e-05 deg
peri 144.0099854747572 1.758e-05 deg
M 98.15926723803508 8.4478e-06 deg
tp 2458853.241222765682
(2020-Jan-04.74122277)
2.9793e-05 TDB
period 1273.574704884452
3.49
5.2066e-06
1.425e-08
d
yr
n .2826689307029397 1.1556e-09 deg/d
Q 2.527246049644104 6.8879e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2071  
   data-arc span      15475 days (42.37 yr)  
   first obs. used      1978-03-06  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48577  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:12:54  

Additional Information
 Earth MOID = 1.0814 au 
 Jupiter MOID = 2.45046 au 
 T_jup = 3.584 
[ 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 14.2   n/a MPO502228  
diameter diameter 3.661 km 0.362 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.331   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7997 (1985 CN1)          Discovered 1985-Feb-13 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 CN1 = 1978 EC = 1978 ER6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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