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101978 (1999 RZ52)
Classification: Main-belt Asteroid          SPK-ID: 2101978
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1434944151700307 4.1215e-08  
a 2.211258353693295 7.4667e-09 au
q 1.893955129440231 8.9891e-08 au
i 4.430075174059785 4.2517e-06 deg
node 334.9095024414933 5.4785e-05 deg
peri 13.51922418168233 5.6491e-05 deg
M 157.9105471139485 1.4237e-05 deg
tp 2458673.675098964421
(2019-Jul-09.17509896)
4.7206e-05 TDB
period 1201.040512106843
3.29
6.0833e-06
1.666e-08
d
yr
n .2997400973331822 1.5182e-09 deg/d
Q 2.528561577946359 8.5381e-09 au
  Orbit Determination Parameters
   # obs. used (total)      920  
   data-arc span      8385 days (22.96 yr)  
   first obs. used      1998-03-29  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47757  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:43  

Additional Information
 Earth MOID = .885713 au 
 Jupiter MOID = 2.86984 au 
 T_jup = 3.640 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO439697  
rotation period rot_per 5.42 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

101978 (1999 RZ52)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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