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1865 Cerberus (1971 UA)
Classification: Apollo [NEO]          SPK-ID: 2001865
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 345 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4668531251159767 3.7652e-08  
a 1.07999393336823 1.1569e-09 au
q .5757953904689762 4.055e-08 au
i 16.09595516619598 3.7363e-06 deg
node 212.9201790880834 9.7771e-06 deg
peri 325.2454993338431 1.0673e-05 deg
M 3.320367404915569 8.8547e-06 deg
tp 2458996.718935883446
(2020-May-27.21893588)
1.0081e-05 TDB
period 409.9495374952898
1.12
6.5871e-07
1.803e-09
d
yr
n .8781568634020871 1.411e-09 deg/d
Q 1.584192476267485 1.697e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1996  
   data-arc span      17976 days (49.22 yr)  
   first obs. used      1971-10-26  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42395  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-12 05:24:30  

Additional Information
 Earth MOID = .156542 au 
 Jupiter MOID = 3.40788 au 
 T_jup = 5.592 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457814.5 (2017-Mar-02.0) TDB
Reference: JPL 345 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4669762649023524 3.7694e-08  
q .5756704762602858 4.0596e-08 au
tp 2457766.825616257824
(2017-Jan-13.32561626)
9.3883e-06 TDB
node 212.9287955363455 9.7776e-06 deg
peri 325.2523724712005 1.0667e-05 deg
i 16.09512592950128 3.7362e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1996  
   data-arc span      17976 days (49.22 yr)  
   first obs. used      1971-10-26  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42395  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-12 05:24:30  

Additional Information
 Jupiter MOID = 3.40788 au 
 T_jup = 5.592 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.420804821619128E-15 -1.530033011963246E-15 1.451639591285773E-13 -2.736914333175065E-14 8.654284511283334E-14 1.413331032654516E-14
q -1.530033011963246E-15 1.648027176236589E-15 -1.552674743484336E-13 2.89031430134297E-14 -9.244128628575218E-14 -1.496387805811624E-14
tp 1.451639591285773E-13 -1.552674743484336E-13 8.814040525497182E-11 -5.759872775661331E-12 4.607300984886091E-11 -1.193146392336703E-12
node -2.736914333175065E-14 2.89031430134297E-14 -5.759872775661331E-12 9.560220576376339E-11 -9.285418327024252E-11 -1.3548707743297E-11
peri 8.654284511283334E-14 -9.244128628575218E-14 4.607300984886091E-11 -9.285418327024252E-11 1.137750772739803E-10 1.189112111868684E-11
i 1.413331032654516E-14 -1.496387805811624E-14 -1.193146392336703E-12 -1.3548707743297E-11 1.189112111868684E-11 1.395890165238848E-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 16.7   n/a MPO502171  
diameter diameter 1.2 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
rotation period rot_per 6.8039 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Pravec, P.; Wolf, M.; Sarounova, L. (1999) http://www.asu.cas.cz/~ppravec/neo.htm]
[Sarneczky, K.; Szabo, G.; Kiss, L.L. (1999) Astron. Astrophys. Suppl. Ser. 137, 363-368.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
[Durech, J.; Vokrouhlicky, D.; Baransky, A.R.; Breiter, S.; et al. (2012) Astron. Astrophys. 547, A10.]
[Skiff, B.A.; Bowell, E.; Koehn, B.W.; Sanborn, J.J.; McLelland, K.P.; Warner, B.D. (2012) Minor Planet Bull. 39, 111-130.]
[Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2015) Icarus 256, 101-116.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.]
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 27-40.]
[Warner, B.D.; Stephens, R.D. (2020) Minor Planet Bull. 47, 23-34.]
geometric albedo albedo 0.22   n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
B-V BV 0.790   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=8.30, mean=9.85, max.=11.41) deg.
U-B UB 0.442   0.081 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=8.30, mean=9.85, max.=11.41) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
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)

1865 Cerberus (1971 UA)          Discovered 1971-Oct-26 by Kohoutek, L. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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