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4001 Ptolemaeus (1949 PV)
Classification: Main-belt Asteroid          SPK-ID: 2004001
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731516339841919 7.7257e-08  
a 2.286881542844311 1.3282e-08 AU
q 1.890904266972529 1.7943e-07 AU
i 5.459249069057023 6.8246e-06 deg
node 130.725974747509 7.3534e-05 deg
peri 204.0485919469042 7.5867e-05 deg
M 312.5869089883853 2.3944e-05 deg
tp 2457166.864132385216
(2015-May-24.36413239)
8.491e-05 JED
period 1263.176189968428
3.46
1.1004e-05
3.013e-08
d
yr
n .2849958721981594 2.4828e-09 deg/d
Q 2.682858818716094 1.5582e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      992  
   data-arc span      24048 days (65.84 yr)  
   first obs. used      1949-08-20  
   last obs. used      2015-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52902  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:47:22  

Additional Information
 Earth MOID = .882776 AU 
 T_jup = 3.575 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5 mag n/a MPO302087  
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)

4001 Ptolemaeus (1949 PV)          Discovered 1949-Aug-02 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1949 PV = 1949 QD1 = 1982 BU9 = 1987 OE 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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