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15277 (1991 PC7)
Classification: Main-belt Asteroid          SPK-ID: 2015277
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07379401325547831 4.1215e-08  
a 2.875778133237728 1.6035e-08 au
q 2.663562923553768 1.2319e-07 au
i 3.223559985102984 3.7484e-06 deg
node 100.1461869307485 8.5819e-05 deg
peri 228.2591180225247 9.0807e-05 deg
M 323.4026618229457 3.1448e-05 deg
tp 2459181.583337766940
(2020-Nov-28.08333777)
0.00015606 TDB
period 1781.277132252506
4.88
1.4898e-05
4.079e-08
d
yr
n .2021021847087677 1.6903e-09 deg/d
Q 3.087993342921688 1.7218e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1634  
   data-arc span      17468 days (47.82 yr)  
   first obs. used      1972-10-09  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46818  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:58:28  

Additional Information
 Earth MOID = 1.65334 au 
 Jupiter MOID = 2.15658 au 
 T_jup = 3.290 
[ show covariance matrix ]

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 13.8   n/a MPO473973  
rotation period rot_per 2.75 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]

15277 (1991 PC7)          Discovered 1991-Aug-06 by Elst, E. W. at La Silla
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PC7 = 1972 TC9 = 1999 CN100 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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