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49777 Cappi (1999 XS)
Classification: Main-belt Asteroid          SPK-ID: 2049777
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06779958927096513 3.9093e-08  
a 2.355766072355124 8.6701e-09 au
q 2.196046100230972 8.9891e-08 au
i 4.467391705706426 3.5686e-06 deg
node 237.5920604149322 5.2005e-05 deg
peri 341.8506707482289 5.8939e-05 deg
M 96.48559704284632 2.7845e-05 deg
tp 2458646.537984904693
(2019-Jun-12.03798490)
0.00010231 TDB
period 1320.677171927788
3.62
7.2908e-06
1.996e-08
d
yr
n .272587432911034 1.5048e-09 deg/d
Q 2.515486044479275 9.2579e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1062  
   data-arc span      10646 days (29.15 yr)  
   first obs. used      1991-09-13  
   last obs. used      2020-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50466  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:51:00  

Additional Information
 Earth MOID = 1.18807 au 
 Jupiter MOID = 2.45987 au 
 T_jup = 3.547 
[ 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 15.6   n/a MPO337656  
rotation period rot_per 5.939 h n/a LCDB (Rev. 2020-October); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

49777 Cappi           Discovered 1999 Dec. 2 by P. G. Comba at Prescott.
Margaret Capitola Sonntag Comba (b. 1940) is the discoverer's second wife and the joy and comfort of his old age. She is a psychologist and art therapist by profession and a faculty member at Prescott College.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040504/MPCPages.arcLast Updated: 2004-05-11

[ show close-approach data ]
Alternate Designations
 1999 XS = 2001 KD31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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