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JPL Small-Body Database Browser
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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 ]

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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 306 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4668656061218593 4.4973e-08  
a 1.080048254601308 1.4446e-09 au
q .5758108715760121 4.867e-08 au
i 16.09631027651612 5.0776e-06 deg
node 212.9252363005773 1.0224e-05 deg
peri 325.255620306309 1.161e-05 deg
M 12.03974271535183 1.3686e-05 deg
tp 2458586.788724046921
(2019-Apr-13.28872405)
1.5569e-05 TDB
period 409.9804671751315
1.12
8.2253e-07
2.252e-09
d
yr
n .8780906136345727 1.7617e-09 deg/d
Q 1.584285637626603 2.119e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1741  
   data-arc span      17578 days (48.13 yr)  
   first obs. used      1971-10-26  
   last obs. used      2019-12-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43327  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-11 04:52:06  

Additional Information
 Earth MOID = .156505 au 
 Jupiter MOID = 3.40912 au 
 T_jup = 5.592 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457394.5 (2016-Jan-07.0) TDB
Reference: JPL 306 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4669706808491992 4.5004e-08  
q .5756841673738501 4.87e-08 au
tp 2457356.837128257377
(2015-Nov-30.33712826)
1.4052e-05 TDB
node 212.9325615095933 1.0225e-05 deg
peri 325.2372193506121 1.1603e-05 deg
i 16.09451873821741 5.0775e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1741  
   data-arc span      17578 days (48.13 yr)  
   first obs. used      1971-10-26  
   last obs. used      2019-12-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43327  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-11 04:52:06  

Additional Information
 Jupiter MOID = 3.40912 au 
 T_jup = 5.592 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.025338480638527E-15 -2.19140318309499E-15 -2.716009903304011E-14 -8.24277915863721E-14 8.724982485944154E-14 8.806770799148675E-14
q -2.19140318309499E-15 2.371695793669028E-15 3.551433239287456E-14 8.888086998396434E-14 -9.182326378132755E-14 -9.577084700281315E-14
tp -2.716009903304011E-14 3.551433239287456E-14 1.974576999897423E-10 3.87518632149937E-12 7.915930544380204E-11 -2.076077495814645E-11
node -8.24277915863721E-14 8.888086998396434E-14 3.87518632149937E-12 1.045589847880379E-10 -9.928384011800155E-11 -2.219663748305644E-11
peri 8.724982485944154E-14 -9.182326378132755E-14 7.915930544380204E-11 -9.928384011800155E-11 1.346279033770507E-10 1.417425846434743E-11
i 8.806770799148675E-14 -9.577084700281315E-14 -2.076077495814645E-11 -2.219663748305644E-11 1.417425846434743E-11 2.57813930130188E-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 16.84   n/a PDS3 (MPC 17263)  
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. 2019-January); 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.]
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 27-40.]
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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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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