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100015 (1989 SR7)
Classification: Mars-crossing Asteroid          SPK-ID: 2100015
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2998752746498989 3.5766e-08  
a 2.3643344906254 8.0809e-09 au
q 1.65532903588488 8.5748e-08 au
i 4.388856889046739 3.532e-06 deg
node 269.3001510646794 5.1428e-05 deg
peri 88.78147867126388 5.1865e-05 deg
M 218.6407209930464 5.2124e-06 deg
tp 2459721.915124068908
(2022-May-22.41512407)
1.9815e-05 TDB
period 1327.889092130791
3.64
6.8077e-06
1.864e-08
d
yr
n .2711069788383664 1.3899e-09 deg/d
Q 3.073339945365921 1.0504e-08 au
  Orbit Determination Parameters
   # obs. used (total)      918  
   data-arc span      11471 days (31.41 yr)  
   first obs. used      1989-09-27  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47595  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:10  

Additional Information
 Earth MOID = .657332 au 
 Jupiter MOID = 2.41183 au 
 T_jup = 3.483 
[ 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 15.8   n/a MPO469005  
rotation period rot_per 2.4172 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Benishek, V.; Pravec, P.; Hornoch, K.; Kusnirak, P.; et al. (2018) CBET 4565.]

100015 (1989 SR7)          Discovered 1989-Sep-28 by Shoemaker, C. S. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1989 SR7 = 2000 UC98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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